Shorten link name

Since git's description's markdown doesn't support opening in new tab, converted anchor to pure markdown

Full Changelog: v1.15...v1.16

New hyperlink opening in new tab

Now the link will open in new tab and has beautiful link instead

What's Changed

• Custom ticket by @sbimochan in #21
• hyperlink: Add a hyperlink that opens on new tab by @sbimochan in #22

Full Changelog: v1.14...v1.15

Prevent multi appends on PR commits additions

If a PR gets pushed multiple after created, even if the action runs, it won't append again making duplicates. It silently fails.

Append ticket link to PR

• Appends ticket link in PR description
• Handle empty PR description