qapi/dump: Clean up documentation of DumpGuestMemoryCapability

The type's doc comment describes its member, but it's not marked up as
such.  Easy enough to fix.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240205074709.3613229-12-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
diff --git a/qapi/dump.json b/qapi/dump.json
index 5cbc237..1997c1d 100644
--- a/qapi/dump.json
+++ b/qapi/dump.json
@@ -186,7 +186,7 @@
 ##
 # @DumpGuestMemoryCapability:
 #
-# A list of the available formats for dump-guest-memory
+# @formats: the available formats for dump-guest-memory
 #
 # Since: 2.0
 ##
diff --git a/qapi/pragma.json b/qapi/pragma.json
index 544f138..aea6384 100644
--- a/qapi/pragma.json
+++ b/qapi/pragma.json
@@ -74,7 +74,6 @@
         'DummyBlockCoreForceArrays',
         'DummyForceArrays',
         'DummyVirtioForceArrays',
-        'DumpGuestMemoryCapability',
         'GrabToggleKeys',
         'GuestPanicInformationHyperV',
         'HotKeyMod',