spelling: within

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

store/state.go

@@ -31,7 +31,7 @@ func IsStaleRead(
 		return false
 	}
 	if time.Since(leaderlastContact).Nanoseconds() > freshness {
-		// The Leader has not been in contact witin the freshness window, so
+		// The Leader has not been in contact within the freshness window, so
 		// the read is stale.
 		return true
 	}