Fixed registerAdapter error

src/pawsqlite.mjs

@@ -23,7 +23,7 @@ export default {
   registerAdapter: function(adapter) {
     const wrapped = wrapAdapter(adapter);
 
-    if (getAdapter(wrapped.name)) {
+    if (getAdapter(wrapped.name, true)) {
       throw new PawSQLiteError(`An adapter with the name: ${ wrapped.name } ` +
         `Already exists`);
     }