Match hyphen in multi-revision comment matchers

Currently, the matcher `//[rev-foo,rev-bar]~` does not get selected by
the regex. Change the matcher to also match strings that contain a `-`.h

src/tools/compiletest/src/errors.rs

@@ -118,7 +118,7 @@ fn parse_expected(
     //     //[rev1]~
     //     //[rev1,rev2]~^^
     static RE: Lazy<Regex> =
-        Lazy::new(|| Regex::new(r"//(?:\[(?P<revs>[\w,]+)])?~(?P<adjust>\||\^*)").unwrap());
+        Lazy::new(|| Regex::new(r"//(?:\[(?P<revs>[\w\-,]+)])?~(?P<adjust>\||\^*)").unwrap());
 
     let captures = RE.captures(line)?;