doc/cephfs: Update deprecation notice in experimental-features.rst

The "inline data" feature was not removed on Quincy so update
deprecation notice to refer to "a future release" instead.

Signed-off-by: Ville Ojamo <[email protected]>

Author: bluikko

doc/cephfs/experimental-features.rst

@@ -25,7 +25,7 @@ Inline data has always been off by default and requires setting
 the ``inline_data`` flag.
 
 Inline data has been declared deprecated for the Octopus release, and will
-likely be removed altogether in the Q release.
+likely be removed altogether in a future release.
 
 Mantle: Programmable Metadata Load Balancer
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