GameDB: Add FullVU0SyncHack to the linter

pcsx2/Docs/GameIndex.md

@@ -38,6 +38,7 @@ SERIAL-12345: # !required! Serial number for the game, this is how games are loo
     - GIFFIFOHack
     - GoemonTlbHack
     - IbitHack
+    - FullVU0SyncHack
     - VUSyncHack
     - VUOverflowHack
     - SoftwareRendererFMVHack
@@ -220,6 +221,9 @@ These values are case-sensitive so take care.  If you incorrectly specify a Game
 *   `IbitHack`
     *   VU I bit Hack avoid constant recompilation in some games (Scarface The World Is Yours, Crash Tag Team Racing).
 
+*   `FullVU0SyncHack`
+    *   Increase the synchronisation points between COP2 and VU0.
+
 *   `VUSyncHack`
     *   Make the VU's run behind/in sync with the EE to fix some timing issues.
 

pcsx2/Docs/gamedb-schema.json

@@ -101,6 +101,7 @@
               "VIFFIFOHack",
               "VuAddSubHack",
               "VUOverflowHack",
+              "FullVU0SyncHack",
               "VUSyncHack",
               "XGKickHack"
             ]