Add datatypes to createHeaderMemo comments

src/chatmodel.cpp

@@ -380,13 +380,13 @@ QString MainWindow::createHeaderMemo(QString type, QString cid, QString zaddr, Q
     QJsonObject h;
     // We use short keynames to use less space for metadata and so allow
     // the user to send more actual data in memos
-    h["h"]   = headerNumber;    // header number
-    h["v"]   = version;         // HushChat version
-    h["z"]   = zaddr;           // zaddr to respond to
-    h["cid"] = cid;             // conversation id
-    h["t"]   = type;            // Memo or incoming contact request
-    h["e"]   = headerbytes;     // libsodium headerbytes
-    h["p"]   = publickey;       // libsodium public key
+    h["h"]   = headerNumber;    // integer, header number
+    h["v"]   = version;         // integer, HushChat version
+    h["z"]   = zaddr;           // string, zaddr to respond to
+    h["cid"] = cid;             // string, conversation id
+    h["t"]   = type;            // string, Memo or incoming contact request
+    h["e"]   = headerbytes;     // string, hex-encoded libsodium headerbytes
+    h["p"]   = publickey;       // string, hex-encoded libsodium public key
 
     j.setObject(h);
     header = j.toJson();