[media] docs-rst: fix two wrong :name: tags

There's a typo there, causing 4 warnings:

  Documentation/media/uapi/rc/lirc-read.rst:26: WARNING: c:type reference target not found: name
  Documentation/media/uapi/rc/lirc-read.rst:26: WARNING: c:type reference target not found: lirc
  Documentation/media/uapi/v4l/func-poll.rst:25: WARNING: c:type reference target not found: name
  Documentation/media/uapi/v4l/func-poll.rst:25: WARNING: c:type reference target not found: v4l2

 Fix them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/media/uapi/rc/lirc-read.rst

@@ -21,7 +21,7 @@ Synopsis
 
 
 .. c:function:: ssize_t read( int fd, void *buf, size_t count )
-    :name lirc-read
+    :name: lirc-read
 
 
 Arguments

Documentation/media/uapi/v4l/func-poll.rst

@@ -21,7 +21,7 @@ Synopsis
 
 
 .. c:function:: int poll( struct pollfd *ufds, unsigned int nfds, int timeout )
-    name: v4l2-poll
+    :name: v4l2-poll
 
 Arguments
 =========