docs: fix element names in section headers

Hopefully that'll make hotdoc pick up the docs for these elements.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1428>

gst/audiofxbad/gstaudiochannelmix.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstaudiochannelmix
+ * SECTION:element-audiochannelmix
  * @title: gstaudiochannelmix
  *
  * The audiochannelmix element mixes channels in stereo audio based on

gst/camerabin2/gstviewfinderbin.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1301, USA.
  */
 /**
- * SECTION:element-gstviewfinderbin
+ * SECTION:element-viewfinderbin
  * @title: gstviewfinderbin
  *
  * The gstviewfinderbin element is a displaying element for camerabin2.

gst/debugutils/gstchopmydata.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1301, USA.
  */
 /**
- * SECTION:element-gstchopmydata
+ * SECTION:element-chopmydata
  * @title: gstchopmydata
  *
  * The chopmydata element takes an incoming stream and chops it up

gst/debugutils/gstclockselect.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstclockselect
+ * SECTION:element-clockselect
  *
  * The clockselect element is a pipeline that enables one to choose its
  * clock. By default, pipelines chose a clock depending on its elements,

gst/debugutils/gstwatchdog.c

@@ -18,7 +18,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstwatchdog
+ * SECTION:element-watchdog
  * @title: watchdog
  *
  * The watchdog element watches buffers and events flowing through

gst/inter/gstinteraudiosink.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstinteraudiosink
+ * SECTION:element-interaudiosink
  * @title: gstinteraudiosink
  *
  * The interaudiosink element is an audio sink element.  It is used

gst/inter/gstinteraudiosrc.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstinteraudiosrc
+ * SECTION:element-interaudiosrc
  * @title: gstinteraudiosrc
  *
  * The interaudiosrc element is an audio source element.  It is used

gst/inter/gstintersubsink.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstintersubsink
+ * SECTION:element-intersubsink
  * @title: gstintersubsink
  *
  * The intersubsink element is a subtitle sink element.  It is used

gst/inter/gstintersubsrc.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstintersubsrc
+ * SECTION:element-intersubsrc
  * @title: gstintersubsrc
  *
  * The intersubsrc element is a subtitle source element.  It is used

gst/inter/gstintervideosink.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstintervideosink
+ * SECTION:element-intervideosink
  * @title: gstintervideosink
  *
  * The intervideosink element is a video sink element.  It is used

gst/inter/gstintervideosrc.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstintervideosrc
+ * SECTION:element-intervideosrc
  * @title: gstintervideosrc
  *
  * The intervideosrc element is a video source element.  It is used

gst/ivtc/gstcombdetect.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstcombdetect
+ * SECTION:element-combdetect
  * @title: gstcombdetect
  *
  * The combdetect element detects if combing artifacts are present in

gst/ivtc/gstivtc.c

@@ -18,7 +18,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstivtc
+ * SECTION:element-ivtc
  * @title: gstivtc
  *
  * The ivtc element is an inverse telecine filter.  It takes interlaced

gst/jp2kdecimator/gstjp2kdecimator.c

@@ -18,7 +18,7 @@
  * Boston, MA 02110-1301, USA.
  */
 /**
- * SECTION:element-gstjp2kdecimator
+ * SECTION:element-jp2kdecimator
  * @title: gstjp2kdecimator
  *
  * The jp2kdecimator element removes information from JPEG2000 images without reencoding.

gst/rtmp2/gstrtmp2sink.c

@@ -19,7 +19,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstrtmp2sink
+ * SECTION:element-rtmp2sink
  *
  * The rtmp2sink element sends audio and video streams to an RTMP
  * server.

gst/rtmp2/gstrtmp2src.c

@@ -19,7 +19,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstrtmp2src
+ * SECTION:element-rtmp2src
  *
  * The rtmp2src element receives input streams from an RTMP server.
  *

gst/videofilters/gstscenechange.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstscenechange
+ * SECTION:element-scenechange
  * @title: gstscenechange
  *
  * The scenechange element detects scene changes (also known as shot

gst/videofilters/gstvideodiff.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstvideodiff
+ * SECTION:element-videodiff
  * @title: gstvideodiff
  *
  * The videodiff element highlights the difference between a frame and its

gst/videofilters/gstzebrastripe.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1335, USA.
  */
 /**
- * SECTION:element-gstzebrastripe
+ * SECTION:element-zebrastripe
  * @title: gstzebrastripe
  *
  * The zebrastripe element marks areas of images in a video stream

gst/videoparsers/gstdiracparse.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1301, USA.
  */
 /**
- * SECTION:element-gstdiracparse
+ * SECTION:element-diracparse
  * @title: gstdiracparse
  *
  * The gstdiracparse element does FIXME stuff.

gst/y4m/gsty4mdec.c

@@ -17,7 +17,7 @@
  * Boston, MA 02110-1301, USA.
  */
 /**
- * SECTION:element-gsty4mdec
+ * SECTION:element-y4mdec
  * @title: gsty4mdec
  *
  * The gsty4mdec element decodes uncompressed video in YUV4MPEG format.