Run codespell -w against all files

and fix the wrong correction

graphics/nxbe/nxbe_raise.c

@@ -72,7 +72,7 @@ void nxbe_raise(FAR struct nxbe_window_s *wnd)
 {
   FAR struct nxbe_state_s *be = wnd->be;
 
-  /* A modal window should already be at the top of the heirarchy. */
+  /* A modal window should already be at the top of the hierarchy. */
 
   DEBUGASSERT(!NXBE_ISMODAL(wnd) || wnd->above == NULL);
 

graphics/nxterm/nxterm_driver.c

@@ -139,7 +139,7 @@ static int nxterm_open(FAR struct file *filep)
 #endif
 
 #ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
-  /* Increment the count of open file references */
+  /* Increment the count of open file reference */
 
   DEBUGASSERT(priv->orefs != UINT8_MAX);
   priv->orefs++;
@@ -174,7 +174,7 @@ static int nxterm_close(FAR struct file *filep)
       return ret;
     }
 
-  /* Has the driver been unlinked?  Was this the last open refernce to the
+  /* Has the driver been unlinked?  Was this the last open references to the
    * terminal driver?
    */
 

graphics/vnc/server/vnc_fbdev.c

@@ -77,7 +77,7 @@
 
 struct vnc_fbinfo_s
 {
-  /* The publically visible frame buffer interface.  This must appear first
+  /* The publicly visible frame buffer interface.  This must appear first
    * so that struct vnc_fbinfo_s is cast compatible with struct fb_vtable_s.
    */
 

graphics/vnc/server/vnc_server.h

@@ -214,7 +214,7 @@ enum vnc_server_e
   VNCSERVER_INITIALIZED,       /* State structured initialized, but not connected */
   VNCSERVER_CONNECTED,         /* Connect to a client, but not yet configured */
   VNCSERVER_CONFIGURED,        /* Configured and ready to transfer graphics */
-  VNCSERVER_RUNNING,           /* Running and activly transferring graphics */
+  VNCSERVER_RUNNING,           /* Running and actively transferring graphics */
   VNCSERVER_STOPPING,          /* The updater has been asked to stop */
   VNCSERVER_STOPPED            /* The updater has stopped */
 };