fix warnings

Signed-off-by: Nitish Bharambe <[email protected]>

doc/powerflow/ac.rst

@@ -43,13 +43,12 @@ More detailed information about TDPF can be found in the tutorials:
 .. autofunction:: pandapower.run.runpp
 
 Balanced AC Power Flow using power-grid-model
----------------------------------------
-.. _ppAC_PGM_PF:
+---------------------------------------------
 
 AC power flow can also be computed using the power-grid-model library.
-Power-grid-model has a C++ core which leads to a higher performance (`documentation <https://power-grid-model.readthedocs.io/en/stable/>`_)
+Power-grid-model has a C++ core which leads to a higher performance (`pgm documentation <https://power-grid-model.readthedocs.io/en/stable/>`_)
 The power-grid-model and conversion library is required for running this function.
 They can be installed using `pip install power-grid-model power-grid-model-io`
-Also refer `conversion documentation <https://power-grid-model-io.readthedocs.io/en/stable/converters/pandapower_converter.html>`_ for more details on conversion.
+Also refer `pgm conversion documentation <https://power-grid-model-io.readthedocs.io/en/stable/converters/pandapower_converter.html>`_ for more details on conversion.
 
 .. autofunction:: pandapower.run.runpp_pgm

doc/powerflow/ac_3ph.rst

@@ -17,7 +17,7 @@ pandapower uses Sequence Frame to solve three phase power flow :
 
 
 Asymmetric Power Flow using power-grid-model
----------------------------------------
+--------------------------------------------
 
-The same function mentioned in :ref:`Balanced AC Power Flow <_ppAC_PGM_PF>`, ie. :func:`pandapower.run.runpp_pgm` can be used for asymmetric power flow calculation.
-The argument `symmetric=False` should be added to do so.
+The same function mentioned in `Balanced AC Power Flow using power-grid-model`_, ie. `pandapower.run.runpp_pgm()` can be used for asymmetric power flow calculation.
+The argument `symmetric=False` should be set for this purpose.