Change existing HTMLs to redirect to github pages

The patch rewrite all extension to redirect to the github pages location.
The README now ask to no longer publish the HTML along side the document.

README.md

@@ -11,6 +11,26 @@ Khronos SPIR-V Registry](https://www.khronos.org/registry/spir-v/).
 - Issue tracking for all SPIR-V specifications
 - Pull requests to add new SPIR-V extensions
 
+## Publishing new extension
+
+To publish a new extension, please create a pull request which includes:
+
+- The extension document in the asciidoc format named following
+  the `SPV_<vendor>_<name>.asciidoc` pattern. The document should be placed
+  in the `extension/<vendor>` folder.
+- README.md update with the link to the new extension once published
+
+To publish a non-semantic extended instruction set,
+
+- The instruction set in the asciidoc format named following
+  the `NonSemantic.<name>.asciidoc` pattern. The document should be placed
+  in the `nonsemantic` folder.
+- README.md update with the link to the new extension once published
+
+Please see [BUILD.md](BUILD.md) for instructions to create an HTML specification for this repo.
+
+Note: we no longer push the HTML along side the extension.
+
 ## Extension Specifications
 
 ### KHR Extensions (Khronos)
@@ -168,7 +188,3 @@ Khronos SPIR-V Registry](https://www.khronos.org/registry/spir-v/).
 * [NonSemantic.DebugBreak                  ]( https://github.khronos.org/SPIRV-Registry/nonsemantic/NonSemantic.DebugBreak.html)
 * [NonSemantic.DebugPrintf                 ]( https://github.khronos.org/SPIRV-Registry/nonsemantic/NonSemantic.DebugPrintf.html)
 * [NonSemantic.Shader.DebugInfo.100        ]( https://github.khronos.org/SPIRV-Registry/nonsemantic/NonSemantic.Shader.DebugInfo.100.html)
-
-## Building HTML Specifications
-
-Please see [BUILD.md](BUILD.md) for instructions to create an HTML specification for this repo.