doc/examples: remove pathes from doxy examples

This makes the examples page less cluttered
Reviewed-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

doc/examples/avio_reading.c

@@ -26,7 +26,7 @@
  *
  * Make libavformat demuxer access media content through a custom
  * AVIOContext read callback.
- * @example doc/examples/avio_reading.c
+ * @example avio_reading.c
  */
 
 #include <libavcodec/avcodec.h>

doc/examples/demuxing_decoding.c

@@ -26,7 +26,7 @@
  *
  * Show how to use the libavformat and libavcodec API to demux and
  * decode audio and video data.
- * @example doc/examples/demuxing_decoding.c
+ * @example demuxing_decoding.c
  */
 
 #include <libavutil/imgutils.h>

doc/examples/filtering_audio.c

@@ -25,7 +25,7 @@
 /**
  * @file
  * API example for audio decoding and filtering
- * @example doc/examples/filtering_audio.c
+ * @example filtering_audio.c
  */
 
 #include <unistd.h>

doc/examples/filtering_video.c

@@ -24,7 +24,7 @@
 /**
  * @file
  * API example for decoding and filtering
- * @example doc/examples/filtering_video.c
+ * @example filtering_video.c
  */
 
 #define _XOPEN_SOURCE 600 /* for usleep */

doc/examples/metadata.c

@@ -23,7 +23,7 @@
 /**
  * @file
  * Shows how the metadata API can be used in application programs.
- * @example doc/examples/metadata.c
+ * @example metadata.c
  */
 
 #include <stdio.h>

doc/examples/muxing.c

@@ -26,7 +26,7 @@
  *
  * Output a media file in any supported libavformat format. The default
  * codecs are used.
- * @example doc/examples/muxing.c
+ * @example muxing.c
  */
 
 #include <stdlib.h>

doc/examples/remuxing.c

@@ -25,7 +25,7 @@
  * libavformat/libavcodec demuxing and muxing API example.
  *
  * Remux streams from one container format to another.
- * @example doc/examples/remuxing.c
+ * @example remuxing.c
  */
 
 #include <libavutil/timestamp.h>

doc/examples/resampling_audio.c

@@ -21,7 +21,7 @@
  */
 
 /**
- * @example doc/examples/resampling_audio.c
+ * @example resampling_audio.c
  * libswresample API use example.
  */
 

doc/examples/scaling_video.c

@@ -23,7 +23,7 @@
 /**
  * @file
  * libswscale API use example.
- * @example doc/examples/scaling_video.c
+ * @example scaling_video.c
  */
 
 #include <libavutil/imgutils.h>