Improve changelog in the release notes (#4179)

This PR adds description to each of the sections of the Changelog part.
Changes are based on feedback that it wasn't that clear what exactly
`Node Dev`, `Runtime Dev` etc. means. Now, the description for each of
those parts is taken directly from the `prdoc` schema.
Closes https://github.com/paritytech/release-engineering/issues/197

.github/workflows/release-30_publish_release_draft.yml

@@ -42,7 +42,6 @@ jobs:
           URL=https://github.com/chevdor/tera-cli/releases/download/v0.2.4/tera-cli_linux_amd64.deb
           wget $URL -O tera.deb
           sudo dpkg -i tera.deb
-          tera --version
 
       - name: Download artifacts
         uses: actions/download-artifact@c850b930e6ba138125429b7e5c93fc707a7f8427 # v4.1.4
@@ -70,7 +69,7 @@ jobs:
 
           export REF1=$(get_latest_release_tag)
           if [[ -z "${{ inputs.version }}" ]]; then
-            export REF2="${{ github.ref }}"
+            export REF2="${{ github.ref_name }}"
           else
             export REF2="${{ inputs.version }}"
           fi
@@ -79,10 +78,6 @@ jobs:
 
           ./scripts/release/build-changelogs.sh
 
-          echo "Checking the folder state"
-          pwd
-          ls -la scripts/release
-
       - name: Archive artifact context.json
         uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3 # v4.3.1
         with:
@@ -151,5 +146,5 @@ jobs:
           access_token: ${{ secrets.RELEASENOTES_MATRIX_V2_ACCESS_TOKEN }}
           server: m.parity.io
           message: |
-            **New version of polkadot tagged**: ${{ github.ref }}<br/>
+            **New version of polkadot tagged**: ${{ github.ref_name }}<br/>
             Draft release created: ${{ needs.publish-release-draft.outputs.release_url }}