Update docs/source/developers/cpp/building.rst

Co-authored-by: Raúl Cumplido <raulcumplido@gmail.com>

Author: meher745

docs/source/developers/cpp/building.rst

@@ -332,7 +332,6 @@ depends on ``python`` being available).
 
       $ export ARROW_TEST_DATA="<absolute_path_to_arrow>/testing/data"
       $ export PARQUET_TEST_DATA="<absolute_path_to_arrow>/cpp/submodules/parquet-testing/data"
-  
 On some Linux distributions, running the test suite might require setting an
 explicit locale. If you see any locale-related errors, try setting the
 environment variable (which requires the ``locales`` package or equivalent):