And stop displaying the 0.24.x releases that are no longer able to sync the chain.

• Run the fetch_documentation.sh script
• Copy the .user-do-cache/0.25.13 folder to .user-do-cache/0.26.0
• Copy 0.25.13 entry in the _data/github-releases.json file and replace 0.25.13 with 0.26.0
• Copy abc_md_docs/doc/release-notes/release-notes-0.25.13.md to abc_md_docs/doc/release-notes/release-notes-0.26.0.md
• Copy abc_md_docs/doc/release-notes/release-notes-0.25.13.orig.md to abc_md_docs/doc/release-notes/release-notes-0.26.0.orig.md
• bundle exec jekyll serve
• Navigate to http://127.0.0.1:4000/releases/ and check the 0.26.0 release is displayed but the 0.24.x are not