Update polkadot/node/core/approval-voting/src/lib.rs

Co-authored-by: Andrei Eres <[email protected]>

polkadot/node/core/approval-voting/src/lib.rs

@@ -123,7 +123,7 @@ const APPROVAL_CHECKING_TIMEOUT: Duration = Duration::from_secs(120);
 const WAIT_FOR_SIGS_TIMEOUT: Duration = Duration::from_millis(500);
 const APPROVAL_CACHE_SIZE: u32 = 1024;
 
-/// The maximum number of times we retry to approve a block if is still needed.
+/// The maximum number of times we retry to approve a block if it is still needed.
 const MAX_APPROVAL_RETRIES: u32 = 16;
 
 const APPROVAL_DELAY: Tick = 2;