docs(Quay): add link to instructions to generate token (#2243)

* docs(Quay): add link to instructions to generate token

* docs(Quay): improve formatting and clarity in docs

* Update plugins/quay/README.md

Co-authored-by: Dominika Zemanovicova <36102317+dzemanov@users.noreply.github.com>

---------

Co-authored-by: Dominika Zemanovicova <36102317+dzemanov@users.noreply.github.com>

plugins/quay/README.md

@@ -24,7 +24,9 @@ The Quay plugin displays the information about your container images within the
          credentials: require
          headers:
            X-Requested-With: 'XMLHttpRequest'
-           # Uncomment the following line to access a private Quay Repository using a token
+           # Uncomment and use the Authorization header below to access a private Quay
+           # Repository using a token. Refer to the "Applications and Tokens" section
+           # at https://docs.quay.io/api/ to find the instructions to generate a token
            # Authorization: 'Bearer <YOUR TOKEN>'
          changeOrigin: true
          # Change to "false" in case of using self hosted quay instance with a self-signed certificate