asfmux: Fix typo in property description

s/milisecs/milliseconds/g

docs/plugins/gst_plugins_cache.json

@@ -843,7 +843,7 @@
                         "writable": true
                     },
                     "preroll": {
-                        "blurb": "The preroll time (milisecs)",
+                        "blurb": "The preroll time (milliseconds)",
                         "construct": true,
                         "construct-only": false,
                         "default": "5000",

gst/asfmux/gstasfmux.c

@@ -242,7 +242,7 @@ gst_asf_mux_class_init (GstAsfMuxClass * klass)
           G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
   g_object_class_install_property (gobject_class, PROP_PREROLL,
       g_param_spec_uint64 ("preroll", "Preroll",
-          "The preroll time (milisecs)",
+          "The preroll time (milliseconds)",
           0, G_MAXUINT64,
           DEFAULT_PREROLL,
           G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));

gst/asfmux/gstasfmux.h

@@ -135,7 +135,7 @@ struct _GstAsfMux
   /* same as properties, but those are stored here to be
    * used without modification while muxing a single file */
   guint32 packet_size;
-  guint64 preroll;              /* milisecs */
+  guint64 preroll;              /* milliseconds */
   gboolean merge_stream_tags;
 
   GstClockTime first_ts;

sys/msdk/gstmsdkcontext.c

@@ -537,7 +537,7 @@ retry:
    * upstream msdk element sometimes needs to wait for a gst buffer
    * to be released in downstream.
    *
-   * Poll the pool for a maximum of 20 milisecnds.
+   * Poll the pool for a maximum of 20 millisecond.
    *
    * FIXME: Is there any better way to handle this case?
    */