[GRASS-git] [OSGeo/grass] 7c3608: howto_release.md: updated changelog extraction

[Markus Neteler]

  Branch: refs/heads/releasebranch_7_8
  Home:   https://github.com/OSGeo/grass
  Commit: 7c3608af348665b874f43ca5b3adde0427081f5a
      https://github.com/OSGeo/grass/commit/7c3608af348665b874f43ca5b3adde0427081f5a
  Author: Markus Neteler <neteler at gmail.com>
  Date:   2020-12-06 (Sun, 06 Dec 2020)

  Changed paths:
    M doc/howto_release.md

  Log Message:
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  howto_release.md: updated changelog extraction

easier changelog for trac Wiki release pages