repairing damage: what size ceramic bypass capacitor
Look at the wording in the 2 points from your screenshot.

In point 1, which talks about the BUS capacitors, which is what your question is about, it states that additional high frequency capacitors mounted close to the pins will improve performance. 

In point 2, about the decoupling capacitors, it mentions the same. It uses the same phrase: 


  high frequency capacitors


and then states 


  typically 0.1uF


So, it would be safe to assume that using a 100nF capacitor on the bus line will be fine. If you are unsure, stick an additional 1uF in parallel with it. But yes, a 100nF should be fine. Make sure that it has the correct voltage tolerance though!

Just remember that there would be a reason this component would be burnt up. Replacing this capacitor may not be a fix, and there could be an underlying issue that requires further investigation.