[luci-milo.cfg] Fix which master Linux ASan is on

The Linux ASan builders are on chromium.memory, not chromium.linux

Bug: 790280, 731523, 790264, 826275
Change-Id: I0356fc73cf52de878ec8c5173bd7c7bdf3b77580
Reviewed-on: https://chromium-review.googlesource.com/982508Reviewed-by: Jao-ke Chin-Lee <jchinlee@chromium.org>
Commit-Queue: Ryan Tseng <hinoka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#546246}

infra/config/global/luci-milo.cfg

@@ -1860,7 +1860,7 @@ consoles: {
   }
 
   builders: {
-    name: "buildbot/chromium.linux/Linux ASan LSan Builder"
+    name: "buildbot/chromium.memory/Linux ASan LSan Builder"
     category: "chromium.memory|asan|builder"
     short_name: "bb"
   }
@@ -1870,7 +1870,7 @@ consoles: {
     short_name: "ci"
   }
   builders: {
-    name: "buildbot/chromium.linux/Linux ASan LSan Tests (1)"
+    name: "buildbot/chromium.memory/Linux ASan LSan Tests (1)"
     category: "chromium.memory|asan|tester"
     short_name: "bb"
   }