chore: Update Docusaurus links (#18581)

* Fix links

* Fix internal link refs

* Add contribution page redirect

docs/docs/databases/firebolt.mdx

@@ -0,0 +1,27 @@
+---
+title: Firebolt
+hide_title: true
+sidebar_position: 39
+version: 1
+---
+
+## Firebolt
+
+The recommended connector library for Firebolt is [firebolt-sqlalchemy](https://pypi.org/project/firebolt-sqlalchemy/).
+Superset has been tested on `firebolt-sqlalchemy>=0.0.1`.
+
+The recommended connection string is:
+
+```
+firebolt://{username}:{password}@{database}
+or
+firebolt://{username}:{password}@{database}/{engine_name}
+```
+
+Here's a connection string example of Superset connecting to a Firebolt database:
+
+```
+firebolt://email@domain:password@sample_database
+or
+firebolt://email@domain:password@sample_database/sample_engine
+```