Rename settings to "Contacts settings"

[PVince81]

For nextcloud/server#32350

[jancborchardt]

In the screenshot it says "Contact" without the s but in the code it looks fine. :)

[codecov]

Codecov Report

Merging #2861 (f72f1c1) into main (40471bf) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##               main    #2861      +/-   ##
============================================
- Coverage     17.93%   17.92%   -0.02%     
  Complexity      253      253              
============================================
  Files           103      103              
  Lines          3233     3235       +2     
  Branches        451      451              
============================================
  Hits            580      580              
- Misses         2458     2460       +2     
  Partials        195      195              

Impacted Files	Coverage Δ
src/components/AppNavigation/RootNavigation.vue	0.00% <0.00%> (ø)

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[welcome]

Thanks for your first pull request and welcome to the community! Feel free to keep them coming! If you are looking for issues to tackle then have a look at this selection: https://github.com/nextcloud/contacts/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22
Most developers hang out on IRC. So join #nextcloud-contacts and #nextcloud-dev on Freenode for a chat!