Add Manuel to ignore list for codespell

.codespellrc

@@ -1,3 +1,3 @@
 [codespell]
 skip = .git,.mypy_cache,build,testdata
-ignore-words-list = fpr,claus,feld,nd,bu,ue,te,fo,afile
+ignore-words-list = fpr,claus,feld,nd,bu,ue,te,fo,afile,Manuel