exclude folder with generated files

Signed-off-by: Yaroslav Halchenko <[email protected]>

.codespellrc

@@ -1,5 +1,5 @@
 [codespell]
-skip = .git,*.pdf,*.svg,go.sum,go.mod,*requirements.txt
+skip = .git,*.pdf,*.svg,go.sum,go.mod,*requirements.txt,gen
 # some strings with unicodes, constructs like [o]utput
 ignore-regex = ".*\\0[0-9][0-9].*"|json:"[^"]*"|\b[a-z]*\[[a-z]\][a-z]*\b
 # some ad-hoc variable names etc