[Release|CI/CD] Fix audiences changelog template (#6444)

This PR addresses an issue mentioned
[here](#6424 (comment)).
The problem was that when the prdoc file has two audiences, but only one
description like in
[prdoc_5660](https://github.com/paritytech/polkadot-sdk/blob/master/prdoc/1.16.0/pr_5660.prdoc)
it was ignored by the template.

.github/workflows/release-30_publish_release_draft.yml

@@ -71,7 +71,7 @@ jobs:
 
       - name: Prepare tooling
         run: |
-          URL=https://github.com/chevdor/tera-cli/releases/download/v0.2.4/tera-cli_linux_amd64.deb
+          URL=https://github.com/chevdor/tera-cli/releases/download/v0.4.0/tera-cli_linux_amd64.deb
           wget $URL -O tera.deb
           sudo dpkg -i tera.deb
 

scripts/release/templates/audience.md.tera

@@ -4,7 +4,7 @@
 
 {% for file in prdoc -%}
 {% for doc_item in file.content.doc %}
-{%- if doc_item.audience == env.TARGET_AUDIENCE %}
+{%- if doc_item.audience is containing(env.TARGET_AUDIENCE) %}
 #### [#{{file.doc_filename.number}}]: {{ file.content.title }}
 {{ doc_item.description }}
 {% endif -%}