static usage of FreeNAS when upgrading zpool

When upgrading a zpool, the confirmation makes mention of FreeNAS.

The file is: ./src/app/helptext/storage/volumes/volume-list.ts and the verbiage is:

"upgradePoolDialog_warning: T("Proceed with upgrading the pool? WARNING: Upgrading a pool is a\
one-way operation that might make some features of\
the pool incompatible with older versions of FreeNAS: "),"

This needs to be dynamic based on the version of installed software.