Improve createHeaderMemo comments

src/chatmodel.cpp

@@ -384,15 +384,13 @@ QString MainWindow::createHeaderMemo(QString type, QString cid, QString zaddr, Q
     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;       // Memo or incoming contact request
-    h["p"] = publickey;       // Memo or incoming contact request
-
+    h["t"]   = type;            // Memo or incoming contact request
+    h["e"]   = headerbytes;     // libsodium headerbytes
+    h["p"]   = publickey;       // libsodium public key
 
     j.setObject(h);
     header = j.toJson();
     return header;
-   
 }