VS: Fix `/analyze:log` flag mapping for v143

Apply the change from commit fb2e418c (VS: Fix `/analyze:log` flag
mapping for v142, 2019-01-24, v3.14.0-rc1~74^2~10) to the v143 flag
table.

Templates/MSBuild/FlagTables/v143_CL.json

@@ -1352,13 +1352,12 @@
     ]
   },
   {
-    "name": "PREfastAdditionalOptions",
-    "switch": "analyze:",
-    "comment": "Additional Code Analysis Native options",
+    "name": "PREfastLog",
+    "switch": "analyze:log",
+    "comment": "Code Analysis Log",
     "value": "",
     "flags": [
-      "UserValue",
-      "SemicolonAppendable"
+      "UserFollowing"
     ]
   },
   {
@@ -1504,15 +1503,6 @@
       "UserRequired"
     ]
   },
-  {
-    "name": "PREfastLog",
-    "switch": "analyze:log",
-    "comment": "Code Analysis Log",
-    "value": "",
-    "flags": [
-      "UserValue"
-    ]
-  },
   {
     "name": "PREfastProjectDirectory",
     "switch": "analyze:projectdirectory",