Update dictionary.txt

Author: thiagowfx

codespell_lib/data/dictionary.txt

@@ -49440,7 +49440,7 @@ regnerated->regenerated
 regnerates->regenerates
 regnerating->regenerating
 regneration->regeneration
-regoin->region
+regoin->regain, region,
 regon->region
 regons->regions
 regorded->recorded