Fix missing user guide

RELNOTES:
PiperOrigin-RevId: 298626332
diff --git a/site/docs/guide.html b/site/docs/guide.html
index d5f21ed..42dc848 100644
--- a/site/docs/guide.html
+++ b/site/docs/guide.html
@@ -2,8 +2,6 @@
 layout: documentation
 title: User's guide
 ---
-<!-- begin-block:internal
-TODO(bazel-team): Refactor flag links from the user manual to the command line reference to have a single source of truth for flag explanations.
 <h1>A user's guide to Bazel</h1>