rn-45: improve Git and Git for Windows release entries

Author: chriscool

rev_news/drafts/edition-45.md

@@ -393,8 +393,8 @@ This edition covers what happened during the month of October 2018.
 
 ## Releases
 
-+[Git v2.20.0-rc0](https://public-inbox.org/git/[email protected]/)
-+[Git for Windows v2.20.0-rc0](https://github.com/git-for-windows/git/releases/tag/v2.20.0-rc0.windows.1)
++ Git [2.20.0-rc0](https://public-inbox.org/git/[email protected]/)
++ Git for Windows [2.20.0-rc0](https://github.com/git-for-windows/git/releases/tag/v2.20.0-rc0.windows.1)
 + StGit [0.19](https://public-inbox.org/git/1541522776.3963181.1567641696.46EFA2E6@webmail.messagingengine.com)
 + libgit2 [0.27.7](https://github.com/libgit2/libgit2/releases/tag/v0.27.7),
 [0.27.6](https://github.com/libgit2/libgit2/releases/tag/v0.27.6)