docs: update CODE_REVIEWS.md bullet formatting (angular#28123)

Update bulleted points in CODE_REVIEWS.md to remove '.' at the end of each
point to be cohesive with the CONTRIBUTING.md guidelines.

Author: essjay05

CODE_REVIEWS.md

@@ -1,15 +1,15 @@
 # Code reviews for Angular Material
 
-* Before any coding begins on new, large, or breaking work, a design discussion should take place.
-* All code changes require a review and approval.
-* All behaviors should be covered by unit tests in the same PR.
-* Large changes should be accompanied by corresponding e2e tests in the same PR.
-* Authors should attempt to keep PRs to 200 - 300 line changes.
+* Before any coding begins on new, large, or breaking work, a design discussion should take place
+* All code changes require a review and approval
+* All behaviors should be covered by unit tests in the same PR
+* Large changes should be accompanied by corresponding e2e tests in the same PR
+* Authors should attempt to keep PRs to 200 - 300 line changes
 
 ## Workflow
 1. The code author sends a PR for review. This request should include:
-  * A high-level description of the change being made.
-  * Links to any relevant issues.
+  * A high-level description of the change being made
+  * Links to any relevant issues
   * Screenshots (for visual changes or new additions)
 2. Reviews provide comments and the author responds / makes changes. Repeat until LGTM.
 3. One or more of the reviewers approve the pull request.