small doc tweaks and update for the simplified installation

doc/src/Build_extras.rst

@@ -1295,21 +1295,9 @@ at: `https://github.com/ICAMS/lammps-user-pace/ <https://github.com/ICAMS/lammps
 
    .. tab:: Traditional make
 
-      You can download and build the ML-PACE library
-      in one step from the ``lammps/src`` dir, using these commands,
-      which invoke the ``lib/pace/Install.py`` script.
-
-      .. code-block:: bash
-
-         # print help message
-         make lib-pace
-
-         # download and build the default version in lib/pace
-         make lib-pace args="-b"
-
-      You should not need to edit the ``lib/pace/Makefile.lammps`` file.
-
-      The APIP package itself is activated with ``make yes-APIP``.
+      You need to install the ML-PACE package *first* and follow
+      the instructions :ref:`here <ml-pace>` before installing
+      the APIP package.
 
 ----------
 

doc/src/Packages_details.rst

@@ -202,8 +202,7 @@ large-scale atomistic simulations", J. Chem. Phys. 162, 114119 (2025)
 `link <immel2025_doi_>`_
 
 Adaptive-precision means, that a fast interatomic potential, such as EAM,
-is coupled to a
-precise interatomic potential, such as ACE.
+is coupled to a precise interatomic potential, such as ACE.
 This package provides the required pair_styles and fixes to run an efficient,
 energy-conserving adaptive-precision simulation.
 

doc/src/Packages_list.rst

@@ -41,7 +41,7 @@ whether an extra library is needed to build and use the package:
    * - :ref:`APIP <PKG-APIP>`
      - adaptive-precision interatomic potentials
      - :doc:`Howto APIP <Howto_apip>`
-     - ``PACKAGES/APIP``
+     - ``PACKAGES/apip``
      - ext
    * - :ref:`ASPHERE <PKG-ASPHERE>`
      - aspherical particle models