Fix severity typo (#8)

* Fix severity typo

* Remove extra brackets

Author: Jordan Webb

README.md

@@ -7,7 +7,7 @@
 
 This is an action that runs the [pyright](https://github.com/Microsoft/pyright) type checker against your Python code, and uses [reviewdog](https://github.com/reviewdog/reviewdog) to create GitHub PR comments or reviews with the results.
 
-[![screenshot](screenshot.png)]
+![screenshot](screenshot.png)
 
 This action is based on [action-eslint](https://github.com/reviewdog/action-eslint) and inspired by [pyright-action](https://github.com/jakebailey/pyright-action).
 

pyright_to_rdjson.py

@@ -20,7 +20,7 @@ def pyright_to_rdjson(jsonin: TextIO):
         rdjson["diagnostics"].append(
             {
                 "message": f"{d['message']} ({d['rule']})",
-                "severity": d["serverity"].upper(),
+                "severity": d["severity"].upper(),
                 "location": {
                     "path": d["file"],
                     "range": {