comment: improve wording

Author: aignas

python/uv/private/lock.bzl

@@ -14,7 +14,7 @@
 
 """A simple macro to lock the requirements.
 
-Differences with the current {obj}`compile_pip_requirements` rule:
+Differences with the legacy {obj}`compile_pip_requirements` rule:
 - This is implemented as a rule that performs locking in a build action.
 - Additionally one can use the runnable target.
 - Uses `uv`.