Add shift+click option for multi-line PR comments (#58113)

Author: vaindil

data/reusables/repositories/multiple-lines-comment.md

@@ -1 +1 @@
-1. Optionally, you can add a comment on multiple lines. You can click the line number of the first line you want to comment on and drag down to select a range of lines, then click the blue comment icon on the last line you want to comment on. Alternatively, you can click the blue comment icon next to the first line you want to comment on, then drag down to the last line you want to comment on.
+1. Optionally, you can add a comment on multiple lines. To select a range of lines, click the line number of the first line you want to comment on, then either drag down to the final line, or hold down <kbd>Shift</kbd> and click on the last line number. You can then click the blue comment icon on the last line you want to comment on. Alternatively, you can click the blue comment icon next to the first line you want to comment on, then drag down to the last line you want to comment on.