fix(docs): Fix multiple errors in the document, including broken links, spelling errors, and step numbering. (#7979)

* fix: remove trailing comma in JSON example in plugin-config doc

* fix: remove trailing comma in JSON example in plugin-config doc

* Update knowledge-base.md

* Update knowledge-base.md

* Update websearch.md

* Update websearch.md

* Update websearch.md

* Update plugin-publish.md

* Update lark.md

* Update unified-webhook.md

* Update discord.md

* Update wecom.md

* html

* html

* Update websearch.md

* html

* Update start.md

* Update start.md

* Apply suggestions from code review

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

---------

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

docs/en/dev/star/guides/plugin-config.md

@@ -15,7 +15,7 @@ The file content is a `Schema` that represents the configuration. The Schema is
 {
   "token": {
     "description": "Bot Token",
-    "type": "string",
+    "type": "string"
   },
   "sub_config": {
     "description": "Test nested configuration",