fix: Correct faulty link to techdocs-cli (#34091)

The link to Github repository of techdocs-cli was
faulty. This commit corrects the link in the
documentation.

Signed-off-by: evhnn29 <eva.gustavsson@t-online.de>

docs/features/techdocs/architecture.md

@@ -31,7 +31,7 @@ The static files consist of HTML, CSS and Images generated by MkDocs. We remove
 all the JavaScript before adding them to Backstage for security reasons. And
 there is an additional `techdocs_metadata.json` file that TechDocs needs to
 render a site. It's important that you use either
-[techdocs-cli](https://github.com/backstage/techdocs-cli) or
+[techdocs-cli](https://github.com/backstage/backstage/tree/master/packages/techdocs-cli) or
 [techdocs-container](https://github.com/backstage/techdocs-container) to
 generate the docs for the expected output.
 

docs/features/techdocs/concepts.md

@@ -87,7 +87,7 @@ documentation for publishing. Currently it mostly acts as a wrapper around the
 TechDocs container and provides an easy-to-use interface for our docker
 container.
 
-[TechDocs CLI](https://github.com/backstage/techdocs-cli)
+[TechDocs CLI](https://github.com/backstage/backstage/tree/master/packages/techdocs-cli)
 
 ## TechDocs Reader