fix typo of "-" instead of "_" in equivalencies doc ref
fixed doc build warning due to comment mixed in with code examples
Docstring typo fix in find_api_page: "Packages" -< "Parameters"
removed :param: from convolve_fft docstring - they caused sphinx doc build warnings
minor doc cleanups in convolve_fft
Merge pull request #704 from eteq/fix-doc-warnings

Fix sphinx doc warnings