Clarify 16kb page mode indication

This is about previous states of the device, emphasize it since it came up in a bug.

Change-Id: Ib264c4995a34abdae434403c831106de201110eb
diff --git a/debuggerd/libdebuggerd/tombstone_proto_to_text.cpp b/debuggerd/libdebuggerd/tombstone_proto_to_text.cpp
index 0474ae7..11841b2 100644
--- a/debuggerd/libdebuggerd/tombstone_proto_to_text.cpp
+++ b/debuggerd/libdebuggerd/tombstone_proto_to_text.cpp
@@ -594,7 +594,7 @@
   if (tombstone.page_size() != 4096) {
     CBL("Page size: %d bytes", tombstone.page_size());
   } else if (tombstone.has_been_16kb_mode()) {
-    CBL("Has been in 16kb mode: yes");
+    CBL("Has been in 16 KB mode before: yes");
   }
 
   // Process header