run codespell throughout fixing typos automagically

=== Do not change lines below ===
{
 "chain": [],
 "cmd": "codespell -w",
 "exit": 0,
 "extra_inputs": [],
 "inputs": [],
 "outputs": [],
 "pwd": "."
}
^^^ Do not change lines above ^^^

Command/SendKey.hs

@@ -40,7 +40,7 @@ start (_, key) = do
 		)
   where
 	{- No need to do any rollback; when sendAnnex fails, a nonzero
-	 - exit will be propigated, and the remote will know the transfer
+	 - exit will be propagated, and the remote will know the transfer
 	 - failed. -}
 	rollback = noop