Fix Vale check

[clatapie]

The Documentation Style Check needed to be disabled (#178).

Vale is failing as visible here .

Here is one of the errors raised by the Vale check:

{"message": "[Vale.Terms] Use 'MAPDL' instead of 'mapdl'.", 
"location": {"path": "doc/source/technology_showcase_examples/techdemo-25/ex_25-tecstent.rst",
"range": {"start": {"line": 27, "column": 34}}},
"severity": "ERROR"}

The previous error refers to the following sentence:

This example is inspired from the model and analysis defined in Chapter 25 of the `Mechanical
APDL Technology Showcase Manual <mapdl_tech_show_>`_.

This error should not be raised as the .vale.ini file is configured with the following TokenIgnores:

TokenIgnores = (:(func|class|meth|attr|py):`(?:.|\n)*?`)|(<.*>)|(.. (code|jupyter-execute)::.*\n|    .*)

This issue in the Vale repository seems to be related to this error.