Fix a markdown rendering difference warning. #211
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Rust is going to change its Markdown rendering engine from hoedown to pulldown-cmark. In pulldown, a table row starting with just whitespaces will cause that whole cell disappeared. This causes rendering difference between the two engines. To fix this, we add leading and trailing `|` to the rows so that empty cells are correctly rendered.
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Rust is going to change its Markdown rendering engine from hoedown to pulldown-cmark. In pulldown, a table row starting with just whitespaces will cause that whole cell disappeared. This causes rendering difference between the two engines.
To fix this, we add leading and trailing
|to the rows so that empty cells are correctly rendered.cc rust-lang/rust#47501.