Updated README.md for Options

Improved grammar and readability in documentation for `Option` type usage and applications"

Author: fishonamos

exercises/options/README.md

@@ -1,11 +1,10 @@
 # Options
 
-Type Option represents an optional value: every Option is either Some and contains a value, or None, and does not.
-Option types are very common in Cairo code, as they have a number of uses:
+The **`Option`** type represents an optional value: every **`Option`** is either **`Some`** and contains a value, or **`None`**, and does not contain a value. **`Option`** types are very common in Cairo code because they serve a variety of purposes:
 
 - Initial values
 - Return values for functions that are not defined over their entire input range (partial functions)
-- Return value for otherwise reporting simple errors, where None is returned on error
+- Return values for functions that report simple errors, where **`None`** is returned in case of an error
 - Optional struct fields
 - Optional function arguments