docs(deep-links): Fix link to pkg.go.dev to not return 404 (#14595)

Signed-off-by: Håkon Solbjørg <hakon@solbj.org>

docs/operator-manual/deep_links.md

@@ -21,7 +21,7 @@ Each link in the list has five subfields:
 
 1. `title`: title/tag that will be displayed in the UI corresponding to that link
 2. `url`: the actual URL where the deep link will redirect to, this field can be templated to use data from the
-   corresponding application, project or resource objects (depending on where it is located). This uses [text/template](pkg.go.dev/text/template) pkg for templating
+   corresponding application, project or resource objects (depending on where it is located). This uses [text/template](https://pkg.go.dev/text/template) pkg for templating
 3. `description` (optional): a description for what the deep link is about
 4. `icon.class` (optional): a font-awesome icon class to be used when displaying the links in dropdown menus
 5. `if` (optional): a conditional statement that results in either `true` or `false`, it also has access to the same