[Web] Rename JavaScript platform to Web.

Also rename export name from "HTML5" to "Web".

.github/workflows/static_checks.yml

@@ -47,7 +47,7 @@ jobs:
 
       - name: JavaScript style and documentation checks via ESLint and JSDoc
         run: |
-          cd platform/javascript
+          cd platform/web
           npm ci
           npm run lint
           npm run docs -- -d dry-run

.github/workflows/web_builds.yml

@@ -1,4 +1,4 @@
-name: 🌐 JavaScript Builds
+name: 🌐 Web Builds
 on: [push, pull_request]
 
 # Global Settings
@@ -10,11 +10,11 @@ env:
   EM_CACHE_FOLDER: "emsdk-cache"
 
 concurrency:
-  group: ci-${{github.actor}}-${{github.head_ref || github.run_number}}-${{github.ref}}-javascript
+  group: ci-${{github.actor}}-${{github.head_ref || github.run_number}}-${{github.ref}}-web
   cancel-in-progress: true
 
 jobs:
-  javascript-template:
+  web-template:
     runs-on: "ubuntu-20.04"
     name: Template (target=release, tools=no)
 
@@ -42,7 +42,7 @@ jobs:
         uses: ./.github/actions/godot-build
         with:
           sconsflags: ${{ env.SCONSFLAGS }}
-          platform: javascript
+          platform: web
           target: release
           tools: false
           tests: false