Fix Sphinx warnings about duplicate explicit target in status.rst
Fix Sphinx warnings about duplicate explicit target in status.rst

Use anonymous references to fix the following two warnings:

    status.rst:4: WARNING: Duplicate explicit target name: "checking status".
    status.rst:4: WARNING: Duplicate explicit target name: "error reporting".

See http://stackoverflow.com/a/14067756/2580955 for more details.

s3rvac/retdec-python