Address YAML linting errors

Author: brcrista

action.yml

@@ -1,9 +1,10 @@
+---
 name: 'Setup Python'
-description: 'Set up a specific version of Python and add the command-line tools to the PATH'
+description: 'Set up a specific version of Python and add the command-line tools to the PATH.'
 author: 'GitHub'
 inputs:
   python-version:
-    description: 'Version range or exact version of a Python version to use, using semvers version range syntax.'
+    description: 'Version range or exact version of a Python version to use, using SemVer's version range syntax.'
     default: '3.x'
   architecture:
     description: 'The target architecture (x86, x64) of the Python interpreter.'
@@ -13,4 +14,4 @@ runs:
   main: 'dist/index.js'
 branding:
   icon: 'code'
-  color: 'yellow'
+  color: 'yellow'

yaml-lint-config.yml

@@ -1,7 +1,7 @@
 extends: default
 
 rules:
-  # 80 chars should be enough, but don't fail if a line is longer
+  # 120 chars should be enough, but don't fail if a line is longer
   line-length:
-    max: 80
+    max: 120
     level: warning