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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _replace_docstring_header(paragraph):
 """Process NumPy-like function docstrings."""


    # Replace Markdown headers in docstrings with light headers in bold.
    paragraph = re.sub(_docstring_header_pattern,
                       r'*\1*',
                       paragraph,
                       )

    paragraph = re.sub(_docstring_parameters_pattern,
                       r'\n* `\1` (\2)\n',
                       paragraph,
                       )

    return paragraph