Added "Used heap" to voice prompts for Info screen.

openrtx/include/ui/EnglishStrings.h

@@ -89,5 +89,6 @@ const stringsTable_t englishStrings =
     .forEmergencyUse   = "For emergency use",
     .pressAnyButton    = "press any button.",
     .accessibility = "Accessibility",
+    .usedHeap="Used heap"
 };
 #endif  // ENGLISHSTRINGS_H

openrtx/include/ui/ui_strings.h

@@ -94,6 +94,7 @@ typedef struct
     const char* forEmergencyUse;
     const char* pressAnyButton;
     const char* accessibility;
+    const char* usedHeap;
 }
 stringsTable_t;