docs: quote language versions in YAML examples (#28936)

Author: gonmmarques

content/actions/automating-builds-and-tests/building-and-testing-nodejs.md

@@ -102,7 +102,7 @@ Each job can access the value defined in the matrix `node-version` array using t
 ```yaml copy
 strategy:
   matrix:
-    node-version: [14.x, 16.x, 18.x]
+    node-version: ['14.x', '16.x', '18.x']
 
 steps:
 - uses: {% data reusables.actions.action-checkout %}
@@ -117,7 +117,7 @@ Alternatively, you can build and test with exact Node.js versions.
 ```yaml copy
 strategy:
   matrix:
-    node-version: [10.17.0, 17.9.0]
+    node-version: ['10.17.0', '17.9.0']
 ```
 
 Or, you can build and test using a single version of Node.js too.

content/actions/automating-builds-and-tests/building-and-testing-ruby.md

@@ -287,7 +287,7 @@ jobs:
       - uses: {% data reusables.actions.action-checkout %}
       - uses: ruby/setup-ruby@ec02537da5712d66d4d50a0f33b7eb52773b5ed1
         with:
-          ruby-version: 2.6
+          ruby-version: '2.6'
       - run: bundle install
       - name: Rubocop
         run: rubocop
@@ -328,7 +328,7 @@ jobs:
       - name: Set up Ruby 2.6
         uses: ruby/setup-ruby@ec02537da5712d66d4d50a0f33b7eb52773b5ed1
         with:
-          ruby-version: 2.6
+          ruby-version: '2.6'
       - run: bundle install
 
       - name: Publish to GPR

content/actions/migrating-to-github-actions/manually-migrating-to-github-actions/migrating-from-circleci-to-github-actions.md

@@ -390,7 +390,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby: [2.5, 2.6.3]
+        ruby: ['2.5', '2.6.3']
 
     runs-on: ubuntu-latest
 

content/actions/migrating-to-github-actions/manually-migrating-to-github-actions/migrating-from-travis-ci-to-github-actions.md

@@ -74,8 +74,8 @@ Below is an example comparing the syntax for each system.
 ```yaml
 matrix:
   include:
-    - rvm: 2.5
-    - rvm: 2.6.3
+    - rvm: '2.5'
+    - rvm: '2.6.3'
 ```
 
 {% endraw %}
@@ -89,7 +89,7 @@ jobs:
   build:
     strategy:
       matrix:
-        ruby: [2.5, 2.6.3]
+        ruby: ['2.5', '2.6.3']
 ```
 
 {% endraw %}

data/reusables/actions/matrix-variable-example.md

@@ -9,10 +9,10 @@ jobs:
     strategy:
       matrix:
        include:
-         - node-version: 14.x
+         - node-version: '14.x'
            site: "prod"
            datacenter: "site-a"
-         - node-version: 16.x
+         - node-version: '16.x'
            site: "dev"
            datacenter: "site-b"
     steps: