README.md: update versions, fix typos

Currently, the example uses `@v.0.1.0` version of this package,
and `@master` of get-pr-commits. This is obviously wrong, since
v.0.1.0 is not working with the parameters in the example.

Fix the example using last released versions, and fix some typos
while we're at it.

README.md

@@ -1,16 +1,16 @@
-# Commit Messages(in Pull Reqeust) Checker with regex
+# Commit Messages (in Pull Request) Checker with regex
 
 ![Version](https://img.shields.io/github/v/release/gsactions/commit-message-checker?style=flat-square)
 ![Test](https://github.com/gsactions/commit-message-checker/workflows/build-test/badge.svg)
 
-A GitHub action that checks that commit messages match a regex patter. The
+A GitHub action that checks that commit messages match a regex pattern. The
 action is able to act on pull request and push events and check the pull
 request title and body or the commit message of the commits of a push.
 
 On pull requests the title and body are concatenated delimited by two line
 breaks.
 
-Designed to be very flexible in usage you can split checks into various
+Designed to be very flexible in usage: you can split checks into various
 workflows, using action types on pull request to listen on, define branches
 for pushes etc. etc.
 
@@ -45,23 +45,23 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Check Subject Line Length
-        uses: tim-actions/commit-message-checker-with-regex@v0.1.0
+        uses: tim-actions/commit-message-checker-with-regex@v1.0.0
         with:
           commits: ${{ steps.get-pr-commits.outputs.commits }}
           pattern: '^.{0,75}(\n.*)*$'
           error: 'Subject too long (max 75)'
 
       - name: Check Body Line Length
         if: ${{ success() || failure() }}
-        uses: tim-actions/commit-message-checker-with-regex@v0.1.0
+        uses: tim-actions/commit-message-checker-with-regex@v0.3.1
         with:
           commits: ${{ steps.get-pr-commits.outputs.commits }}
           pattern: '^.+(\n.{0,72})*$'
           error: 'Body line too long (max 72)'
 
       - name: Check Fixes
         if: ${{ success() || failure() }}
-        uses: tim-actions/commit-message-checker-with-regex@v0.1.0
+        uses: tim-actions/commit-message-checker-with-regex@v0.3.1
         with:
           commits: ${{ steps.get-pr-commits.outputs.commits }}
           pattern: '\s*Fixes\s*:?\s*(#\d+|github\.com\/kata-containers\/[a-z-.]*#\d+)'
@@ -70,7 +70,7 @@ jobs:
 
       - name: Check subsystem
         if: ${{ success() || failure() }}
-        uses: tim-actions/commit-message-checker-with-regex@v0.1.0
+        uses: tim-actions/commit-message-checker-with-regex@v0.3.1
         with:
           commits: ${{ steps.get-pr-commits.outputs.commits }}
           pattern: '^[\h]*([^:\h\n]+)[\h]*:'