build(internal_deps): Update 'maintained by' comments to be correct

[dougthor42]

This fixes a minor error in the "maintained by" comments in
./MODULE.bazel and ./python/pip_install/repositories.bzl. The
comments now agree with what DEVELOPING.md says.

[dougthor42]

Note: I'm not sure if fix(internal_deps) is the best type and scope for the PR. The PR has no impact on end users but does have a very minor impact on developers. Oh I didn't see the build type. Updated to build(internal_deps).

I found this while working on #1578.

[aignas]

@coeuvre, do you know what the build failure is about? It seems to fail with the RBE setup, but this PR hasn't changed anything, nor have we changed rules_python config regarding RBE in recent days.

[coeuvre]

@aignas Sorry, I recently made some changes to Bazel CI and accidentally broke RBE config for Bazel 6.4.0. It is fixed now.