Recover a link that seems to have been lost in a doc migration.
MOS_MIGRATED_REVID=150783779
@@ -96,7 +96,7 @@ are a few differences:
* Implicit string concatenation is not supported. Use the `+` operator.
*Rationale*: `BUILD` files contain many string lists. It is easy to forget a
comma, which leads to a complete different result. This has created many bugs
- in the past. See also this discussion.
+ in the past. [See also this discussion.](https://lwn.net/Articles/551438/)
* Use spaces around the `=` sign for keywords arguments in rules. *Rationale*:
Named arguments are much more frequent than in Python and are always on a
