Update 7.0.0 release notes

Author: ljm42

docs/unraid-os/release-notes/7.0.0.md

@@ -48,8 +48,8 @@ If you are using ZFS pools, please take note of the following:
 
 * You will see a warning about unsupported features in your existing ZFS pools. This is because the
 version of ZFS in 7.0 is upgraded vs. 6.12 and contains new features.  This warning is harmless, meaning
-your pool will still function normally.  A button will appear letting you upgrade a pool to support new
-features; however, once upgraded previous versions of Unraid OS will not be able to mount the pool.
+your pool will still function normally.  A button will appear letting you upgrade a pool to support the new ZFS features;
+however, Unraid OS does not make use of these new features, and once upgraded previous versions of Unraid OS will not be able to mount the pool.
 * Similarly, new pools created in 7.0 will not mount in 6.12 due to ZFS not supporting downgrades.  There is no way
 around this.
 * If you decide to downgrade from 7.0 to 6.12 any previously existing hybrid pools will not