enhancement: incorporate PR feedback

Signed-off-by: Conor Evans <coevans@tcd.ie>

Author: conorevans

operations/phlare/helm/phlare/values.yaml

@@ -69,8 +69,12 @@ phlare:
     # lines, adjust them as necessary, and remove the curly braces after 'resources'.
     #
     # Note that if memory consumption is higher than you would like, you can decrease the interval
-    # that profiles are written into blocks by setting `-phlaredb.max-block-duration` in the `extraArgs`
-    # stanza. By default, it is set to 3h - override it with `-phlaredb.max-block-duration=30m`, for example.
+    # that profiles are written into blocks by setting `phlaredb.max-block-duration` in the `extraArgs`
+    # stanza. By default, it is set to 3h - override it, for example, as below:
+    # ```
+    # extraArgs:
+    #   phlaredb.max-block-duration: 30m
+    # ```
     #
     # limits:
     #   cpu: 100m