docs: remove publishing.md from microsite and move to docs root

Co-authored-by: Johan Haals <johan.haals@gmail.com>
Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

docs/publishing.md

@@ -1,8 +1,4 @@
----
-id: publishing
-title: Publishing
-description: Documentation on Publishing npm packages
----
+<!-- This is intentionally left out of the microsite, since it only applies to the main repo -->
 
 ## npm
 

microsite/sidebars.json

@@ -202,7 +202,6 @@
         "type": "subcategory",
         "label": "Publishing",
         "ids": [
-          "plugins/publishing",
           "plugins/publish-private",
           "plugins/add-to-marketplace",
           "plugins/observability"

mkdocs.yml

@@ -126,7 +126,6 @@ nav:
       - Testing:
           - Testing with Jest: 'plugins/testing.md'
       - Publishing:
-          - Publishing: 'plugins/publishing.md'
           - Publish private: 'plugins/publish-private.md'
           - Add to Marketplace: 'plugins/add-to-marketplace.md'
           - Observability: 'plugins/observability.md'