automatic docs generation places Shopware docs link into all recipe docs

[SimJoSt]

Since d34b80f through #3816 the automatic docs generation commit change the following line from

  * [deploy:update_code](/docs/recipe/deploy/update_code.md#deployupdate_code) – Updates code

to

  * [deploy:update_code](/docs/recipe/shopware.md#deployupdate_code) – 

for all recipes, not just the Shopware one.

Here are some of the commits of the automatic docs generation that I observed this in:

• 04c5926
• c859ace
• 04c5926

I'm not sure why this is happening, as it does not occur when I run bin/docsgen on my local machine with the same commit.