Rename spring-doc to springdoc

[pascalgrimaud]

• Following Add SpringDoc #538

[pascalgrimaud]

cc @Bolo89 : hope you're ok with this change

[codecov]

Codecov Report

Merging #557 (0200833) into main (d28334c) will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff             @@
##                main      #557   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity       885       885           
===========================================
  Files            160       160           
  Lines           2695      2695           
  Branches          58        58           
===========================================
  Hits            2695      2695           

Impacted Files	Coverage Δ
...infrastructure/primary/rest/SpringDocResource.java	100.00% <ø> (ø)

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