Documentation: csrfguard.properties improvement

[jellisgwn]

The following text in csrfguard.properties could be cleaned up and more concise:

# Note: Rotation in case of AJAX requests is not currently not supported because of the possible race conditions.
# A Single Page Application can fire multiple simultaneous requests. If rotation is enabled,
# the first request might trigger a token change before the validation of the same token within the second request,
# causing false-positive CSRF intrusion exceptions.

"is not currently not supported"

The sentence starting "If rotation is enabled, ..." could be clearer, "If rotation were enabled for AJAX requests, the first request could trigger..."

Happy to provide a PR if it would be helpful.

[forgedhallpass]

hello @jellisgwn,

Thanks for pointing it out; there are multiple sections indeed that could use some re-working in the future. Feel free to provide a PR and will accept it.