docs: update Project Tasks (#233)

Author: rohalskyy

src/assets/screenshots/crowdin/tasks/tasks_create_pending_proofreading_task.png

@@ -181,17 +181,17 @@ Once created, sequential tasks are represented on the Tasks Board, displaying bo
 The concept of sequential tasks is based on two primary approaches:
 
 * **Creating a translation task with its associated pending proofreading task:**
-  * Start by creating a translation task along with its specified languages and work scope.
-  * Select **Create a pending proofreading task** to generate an associated proofreading task.
+  * Start by creating a translation task and specifying the target languages and work scope.
+  * Select **Create a pending proofreading task** to generate the associated proofreading task. You can set separate due dates for the translation and proofreading tasks if needed.
   <Image src={createPendingProofreadingTask} alt="Create a pending proofreading task" />
   * While translators work on the translation task, the linked proofreading task remains pending.
-  * Upon completion of the translation task, the status of the associated proofreading task changes from Pending to To Do, and proofreaders will receive the respective notifications that it's ready for review.
+  * When the translation task is completed, the status of the associated proofreading task changes from Pending to To Do. Proofreaders will then receive notifications that it's ready for review.
 * **Creating a proofreading task and linking it to a translation task:**
-  * Create a proofreading task and select the translation task you want to link it with from the **Preceding task** drop-down menu.
+  * Create a proofreading task and select the translation task you want to link it with from the **Preceding task** drop-down menu. You can link it to either a completed or an active translation task.
   <Image src={selectPrecedingTranslationTask} alt="Select preceding translation task" />
   * The languages and work scope are automatically inherited from the linked translation task.
   * The proofreading task remains pending until the linked translation task is completed.
-  * Similar to the first approach, proofreaders receive notifications when the proofreading task is ready for review.
+  * As with the first approach, proofreaders receive notifications when the proofreading task is ready for review.
 
 ### Task Types Supported
 
@@ -200,11 +200,16 @@ Sequential tasks are available for the following task types:
 * Translate by own translators
 * Proofread by own translators
 * Translate by vendor:
-* Crowdin Language Services
-* Vendors that manage the translation process with a dedicated manager
+  * Crowdin Language Services
+  * Vendors that manage the translation process with a dedicated manager
 * Proofread by vendor:
-* Crowdin Language Services
-* Vendors that manage the translation process with a dedicated manager
+  * Crowdin Language Services
+  * BLEND
+  * Vendors that manage the translation process with a dedicated manager
+
+<Aside>
+  When creating a **Proofread by vendor** task for BLEND and linking it to a preceding translation task, BLEND can only be selected if the preceding translation task (with the Done status) was also completed by BLEND.
+</Aside>
 
 ### Sequential Task Management
 

src/assets/screenshots/crowdin/tasks/tasks_select_preceding_translation_task.png

@@ -181,17 +181,17 @@ Once created, sequential tasks are represented on the Tasks Board, displaying bo
 The concept of sequential tasks is based on two primary approaches:
 
 * **Creating a translation task with its associated pending proofreading task:**
-  * Start by creating a translation task along with its specified languages and work scope.
-  * Select **Create a pending proofreading task** to generate an associated proofreading task.
+  * Start by creating a translation task and specifying the target languages and work scope.
+  * Select **Create a pending proofreading task** to generate the associated proofreading task. You can set separate due dates for the translation and proofreading tasks if needed.
   <Image src={createPendingProofreadingTask} alt="Create a pending proofreading task" />
   * While translators work on the translation task, the linked proofreading task remains pending.
-  * Upon completion of the translation task, the status of the associated proofreading task changes from Pending to To Do, and proofreaders will receive the respective notifications that it's ready for review.
+  * When the translation task is completed, the status of the associated proofreading task changes from Pending to To Do. Proofreaders will then receive notifications that it's ready for review.
 * **Creating a proofreading task and linking it to a translation task:**
-  * Create a proofreading task and select the translation task you want to link it with from the **Preceding task** drop-down menu.
+  * Create a proofreading task and select the translation task you want to link it with from the **Preceding task** drop-down menu. You can link it to either a completed or an active translation task.
   <Image src={selectPrecedingTranslationTask} alt="Select preceding translation task" />
   * The languages and work scope are automatically inherited from the linked translation task.
   * The proofreading task remains pending until the linked translation task is completed.
-  * Similar to the first approach, proofreaders receive notifications when the proofreading task is ready for review.
+  * As with the first approach, proofreaders receive notifications when the proofreading task is ready for review.
 
 ### Task Types Supported
 
@@ -200,6 +200,7 @@ Sequential tasks are available for the following task types:
 * Translate by own translators
 * Proofread by own translators
 * Translate by vendor
+* Proofread by vendor
 
 ### Sequential Task Management