Merge pull request #3469 from codespell-project/assertin

Move assertIn to the code dictionary as it's a Python test function

Author: peternewman

codespell_lib/data/dictionary.txt

@@ -6084,7 +6084,6 @@ assersive->assertive
 assersively->assertively
 assertation->assertion
 assertations->assertions
-assertin->asserting, assert in, assertion,
 assertino->assertion
 assertinos->assertions
 assertio->assertion

codespell_lib/data/dictionary_code.txt

@@ -4,6 +4,7 @@ alloced->allocated
 amin->main
 apoint->appoint
 arange->arrange, a range,
+assertin->asserting, assert in, assertion,
 atend->attend
 atending->attending
 bre->be, brie,