Fix put_bits32() doxy.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@20639 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/put_bits.h

@@ -264,7 +264,7 @@ static inline void put_sbits(PutBitContext *pb, int bits, int32_t val)
 }
 
 /**
- * Write exactly 32 bits into a bitstream
+ * Writes exactly 32 bits into a bitstream.
  */
 static void av_unused put_bits32(PutBitContext *s, uint32_t value)
 {