Wrong LaTeX format in operator documentation
Created by: wangkuiyi
For an example, in lrn_op.cc we have
This violates the rule of LaTex in Markdown -- math equations must follow the starting $$, but not on the second line. This violation leads to wrong rendering of the equation on paddlepaddle.org:
This issue is the same as https://github.com/PaddlePaddle/PaddlePaddle.org/issues/339