Add appedix->appendix and variants to dictionary

Author: nathanjmcdougall

codespell_lib/data/dictionary.txt

@@ -5467,7 +5467,11 @@ appeciating->appreciating
 appeciation->appreciation
 appeciative->appreciative
 appeded->appended
+appedice->appendice, appendix,
+appedices->appendices
+appedicitis->appendicitis
 appeding->appending
+appedix->appendix
 appedn->append
 appen->append, happen, aspen,
 appendend->appended