Update compiler/rustc_lexer/src/lib.rs

Co-authored-by: Vadim Petrochenkov <[email protected]>

Author: richard-uk1

compiler/rustc_lexer/src/lib.rs

@@ -995,7 +995,7 @@ impl Cursor<'_> {
         }
     }
 
-    /// Returns `true` if a digit was consumed (rather than just '_')
+    /// Returns `true` if a digit was consumed (rather than just '_'s).
     fn eat_decimal_digits(&mut self) -> bool {
         let mut has_digits = false;
         loop {