Fix inconsistencies in taplo.toml

[rmburg]

I took a look at the taplo.toml file of this repo to see an example of such a file, and noticed several inconsistencies within.

• align_entries = true was inside a rule without any include or keys field, so I moved it to the global formatting table
• the next rule had include and keys inside the formatting table, which is invalid.
• I removed the keys field of this rule as well, as it does not currently work and prevents the rule from applying correctly. See reorder_arrays = false is ignored if the key is set to the array. #608
• the next rule had include inside formatting as well
• the last rule was not applied in the repo, and probably should not be applied: it asked to sort the keys in the package table inside Cargo.toml files
• I moved align_comments to the Cargo.toml rule without a keys field