Update protocols/v2/subprotocols/mining/src/new_mining_job.rs

Co-authored-by: Gabriele Vernetti <[email protected]>

protocols/v2/subprotocols/mining/src/new_mining_job.rs

@@ -10,7 +10,7 @@ use core::convert::TryInto;
 ///
 /// This is used for Standard Channels only.
 ///
-/// Note that Standard Jobs distrbuted through this message are restricted to fixed a Merkle Root,
+/// Note that Standard Jobs distrbuted through this message are restricted to a fixed Merkle Root,
 /// and the only modifiable bits are `version`, `nonce`, and `nTime` fields of the block header.
 #[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]