Stabilize transactionBroadcast methods (#1540)

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>
Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>

subxt/src/backend/unstable/rpc_methods.rs

@@ -280,24 +280,24 @@ impl<T: Config> UnstableRpcMethods<T> {
     }
 
     /// Broadcast the transaction on the p2p network until the
-    /// [`Self::transaction_unstable_stop`] is called.
+    /// [`Self::transaction_v1_stop`] is called.
     ///
     /// Returns an operation ID that can be used to stop the broadcasting process.
     /// Returns `None` if the server cannot handle the request at the moment.
-    pub async fn transaction_unstable_broadcast(&self, tx: &[u8]) -> Result<Option<String>, Error> {
+    pub async fn transaction_v1_broadcast(&self, tx: &[u8]) -> Result<Option<String>, Error> {
         self.client
-            .request("transaction_unstable_broadcast", rpc_params![to_hex(tx)])
+            .request("transaction_v1_broadcast", rpc_params![to_hex(tx)])
             .await
     }
 
     /// Stop the broadcasting process of the transaction.
     ///
-    /// The operation ID is obtained from the [`Self::transaction_unstable_broadcast`] method.
+    /// The operation ID is obtained from the [`Self::transaction_v1_broadcast`] method.
     ///
     /// Returns an error if the operation ID does not correspond to any active transaction for this connection.
-    pub async fn transaction_unstable_stop(&self, operation_id: &str) -> Result<(), Error> {
+    pub async fn transaction_v1_stop(&self, operation_id: &str) -> Result<(), Error> {
         self.client
-            .request("transaction_unstable_stop", rpc_params![operation_id])
+            .request("transaction_v1_stop", rpc_params![operation_id])
             .await
     }
 }