Edit Pixel 2 Vulkan GPU.FYI bots category.

Reflecting the upgrade from Android P to Q.

TBR=kbr

Bug: angleproject:3340
Change-Id: I49b35fe898f4b5b0a877d02a267b7684d337d62a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1714287Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#679822}

infra/config/luci-milo.cfg

@@ -3474,12 +3474,12 @@ consoles {
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Android FYI 32 Vk Release (Pixel 2)"
-    category: "Android|vk|P32"
+    category: "Android|vk|Q32"
     short_name: "P2"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Android FYI 64 Vk Release (Pixel 2)"
-    category: "Android|vk|P64"
+    category: "Android|vk|Q64"
     short_name: "P2"
   }
   builders {
@@ -3489,12 +3489,12 @@ consoles {
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Android FYI 32 dEQP Vk Release (Pixel 2)"
-    category: "Android|dqp|vk|P32"
+    category: "Android|dqp|vk|Q32"
     short_name: "P2"
   }
   builders {
     name: "buildbucket/luci.chromium.ci/Android FYI 64 dEQP Vk Release (Pixel 2)"
-    category: "Android|dqp|vk|P64"
+    category: "Android|dqp|vk|Q64"
     short_name: "P2"
   }
   builders {