doc link fixes, npm pack tweaks (#3127)

* 🔧 Fix broken Angular Guide link in TypeDoc documentation

- Updated angular/typedoc.html.json to point Angular Guide to index.html instead of README.md
- Regenerated Angular HTML documentation with correct links
- The Angular Guide link now properly navigates to the main Angular docs page

Fixes: https://gridstackjs.com/angular/doc/html/modules.html Angular Guide link

* doc link fixes, npm pack tweaks

* v12.3.0

* gitignore temp fix

Author: adumesny

.gitignore

@@ -9,4 +9,4 @@ node_modules
 .vscode
 .idea/
 .DS_Store
-doc/html/
+# doc/html/

angular/.gitignore

@@ -5,7 +5,7 @@
 /tmp
 /out-tsc
 /bazel-out
-/doc/html/
+# /doc/html/
 
 # Node
 /node_modules