Fix some typos.

Author: johnbillion

.github/workflows/end-to-end-tests.yml

@@ -32,7 +32,7 @@ on:
       - 'tools/webpack/**'
       # These files configure Composer. Changes could affect the outcome.
       - 'composer.*'
-      # This files affect the e2e tests. Changes could affect the outcome.
+      # These files affect the e2e tests. Changes could affect the outcome.
       - 'tests/e2e/**'
       # Confirm any changes to relevant workflow files.
       - '.github/workflows/end-to-end-tests.yml'

.github/workflows/performance.yml

@@ -31,7 +31,7 @@ on:
       - 'tools/webpack/**'
       # These files configure Composer. Changes could affect the outcome.
       - 'composer.*'
-      # This files affect the performance tests. Changes could affect the outcome.
+      # These files affect the performance tests. Changes could affect the outcome.
       - 'tests/performance/**'
       # Confirm any changes to relevant workflow files.
       - '.github/workflows/performance.yml'

.github/workflows/phpunit-tests.yml

@@ -30,7 +30,7 @@ on:
       - 'Gruntfile.js'
       # These files configure Composer. Changes could affect the outcome.
       - 'composer.*'
-      # This files affect the phpunit tests. Changes could affect the outcome.
+      # These files affect the phpunit tests. Changes could affect the outcome.
       - 'phpunit.xml.dist'
       - 'tests/phpunit/**'
       # Confirm any changes to relevant workflow files.