Fix some typos (found by codespell)

Signed-off-by: Stefan Weil <sw@weilnetz.de>

libvncserver/main.c

@@ -582,7 +582,7 @@ listenerRun(void *data)
     socklen_t len;
     fd_set listen_fds;  /* temp file descriptor list for select() */
 
-    /* TODO: this thread wont die by restarting the server */
+    /* TODO: this thread won't die by restarting the server */
     /* TODO: HTTP is not handled */
     while (1) {
         client_fd = -1;

webclients/novnc/include/display.js

@@ -76,7 +76,7 @@ var Display;
         }
 
         if (this._prefer_js === null) {
-            Util.Info("Prefering javascript operations");
+            Util.Info("Preferring javascript operations");
             this._prefer_js = true;
         }
 

webclients/novnc/include/ui.js

@@ -883,7 +883,7 @@ var UI;
             $D('showKeyboard').className = "noVNC_status_button";
             //Weird bug in iOS if you change keyboardVisible
             //here it does not actually occur so next time
-            //you click keyboard icon it doesnt work.
+            //you click keyboard icon it doesn't work.
             UI.hideKeyboardTimeout = setTimeout(function() { UI.setKeyboard(); },100);
         },