impl/memory: Replace gkvlite with "treapstore".

impl/memory/doc.go

Index: impl/memory/doc.go
diff --git a/impl/memory/doc.go b/impl/memory/doc.go
index 1561fe3c352335888613242bbb0b65f326b3d5a6..1c3ede6af8495b0165e91191e4839ba337be2c2c 100644
--- a/impl/memory/doc.go
+++ b/impl/memory/doc.go
@@ -8,11 +8,10 @@
 //
 // Debug EnvVars
 //
-// To debug GKVLite memory access for a binary that uses this memory
+// To debug backend store memory access for a binary that uses this memory
 // implementation, you may set the flag:
-//   -luci.gae.gkvlite_trace_folder
-// to `/path/to/some/folder`. Every gkvlite memory store will be assigned
-// a numbered file in that folder, and all access to that store will be logged
-// to that file. Setting this to "-" will cause the trace information to dump to
-// stdout.
+//   -luci.gae.store_trace_folder
+// to `/path/to/some/folder`. Every memory store will be assigned a numbered
+// file in that folder, and all access to that store will be logged to that
+// file. Setting this to "-" will cause the trace information to dump to stdout.
 package memory