Typo fix (#3765)

Signed-off-by: Skylar Ray <137945430+sky-coderay@users.noreply.github.com>

Author: sky-coderay

database/corruptabledb/db_test.go

@@ -184,7 +184,7 @@ func TestIterator(t *testing.T) {
 			// Put a key-value pair in the database.
 			require.NoError(corruptableDB.Put([]byte{0}, []byte{1}))
 
-			// Mark database as corupted, if applicable
+			// Mark database as corrupted, if applicable
 			_ = corruptableDB.handleError(tt.databaseErrBefore)
 
 			// Make an iterator