docs: fixed typo in comment

Author: ricmoo

packages/providers/src.ts/base-provider.ts

@@ -1940,7 +1940,7 @@ export class BaseProvider extends Provider implements EnsProvider {
             if (currentName === "" || currentName === ".") { return null; }
 
             // Optimization since the eth node cannot change and does
-            // not have a wildcar resolver
+            // not have a wildcard resolver
             if (name !== "eth" && currentName === "eth") { return null; }
 
             // Check the current node for a resolver