fix typo

crates/provider/src/provider/trait.rs

@@ -487,7 +487,7 @@ pub trait Provider<T: Transport + Clone = BoxTransport, N: Network = Ethereum>:
     }
 
     ///
-    /// This method allows [`ProviderLayer`] and [`TxFiller`] to bulid the
+    /// This method allows [`ProviderLayer`] and [`TxFiller`] to build the
     /// transaction and send it to the network without changing user-facing
     /// APIs. Generally implementors should NOT override this method.
     ///