manual_rules.md and 32_core_nodes.md severely outdated, but I need more info to fix them

[rlpitts]

There are a couple of files I've identified that need to be addressed, but I'm missing some information that I would need to proceed with the edits myself, specifically manual_rules.md and 32_core_nodes.md. Both contain references to Aurora, but that's the least of their issues.

manual_rules.md is not indexed with the rest of the manual and so can only be found as a result of searching for "batch". On this one, the 2 things I need to know are 1) are the values in the table still applicable to cosmos or have they increased, and 2) was this supposed to appear under User Manual > Introduction or User Manual > Submitting Jobs, or somewhere else?

32_core_nodes.md describes our nodes as being Haswell or Cascade Lake, and does not mention Milan outside the table. Even if do module --force purge, the only software tree I see is Milan. The rest of the document needs to be updated to reflect that our primary software tree is Milan, but I feel a bit out of my depth regarding the updates to the partitioning structure.