website: note repo desc for publishing, fix broken link

website/docs/modules/create.html.markdown

@@ -198,7 +198,7 @@ $ tree complete-module/
 ## Publishing Modules
 
 If you've built a module that you intend to be reused, we recommend
-[publishing the module](/docs/registry/module/publish.html) on the
+[publishing the module](/docs/registry/modules/publish.html) on the
 [Terraform Registry](https://registry.terraform.io). This will version
 your module, generate documentation, and more.
 

website/docs/registry/modules/publish.html.md

@@ -38,6 +38,10 @@ where PROVIDER is the primary provider to associate with the module and
 NAME is a unique name for the module. The name may contain hyphens. Example:
 `terraform-aws-consul` or `terraform-google-vault`.
 
+* **Repostory description.** The GitHub repository description is used
+to populate the short description of the module. This should be a simple
+one sentence description of the module.
+
 * **Standard Module Structure.** The module must adhere to the
 [standard module structure](/docs/modules/create.html#standard-module-structure).
 This allows the registry to inspect your module and generate documentation,