adjusted divider's length to match the title's one

lpizzinidev · lpizzinidev · commit 2b7ef53931d5 · 2023-01-13T10:13:27.000+01:00
diff --git a/doc/source/getting_started/install.rst b/doc/source/getting_started/install.rst
@@ -202,7 +202,7 @@ Installing from source
 See the :ref:`contributing guide <contributing>` for complete instructions on building from the git source tree. Further, see :ref:`creating a development environment <contributing_environment>` if you wish to create a pandas development environment.
 
 Installing the development version of pandas
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+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Installing a nightly build is the quickest way to:
 
