add space to ansible-matrix-announcement.j2

Add extra space before the emojis so it renders better in the forum for the bullhorn posts.

src/antsibull/data/ansible-matrix-announcement.j2

@@ -13,4 +13,4 @@
 python3 -m pip install ansible=={{ version }} --user
 ```
 
-➡️ Check [Release Notes📦️🗒️]({{ build_data_path }}/CHANGELOG-v{{ major_version }}.md) and [Ansible {{ major_version }} Porting Guide](https://docs.ansible.com/ansible/devel/porting_guides/porting_guide_{{ major_version }}.html) for more details!
+➡️ Check [Release Notes 📦️🗒️]({{ build_data_path }}/CHANGELOG-v{{ major_version }}.md) and [Ansible {{ major_version }} Porting Guide](https://docs.ansible.com/ansible/devel/porting_guides/porting_guide_{{ major_version }}.html) for more details!