Fix random typos.

Originally committed as revision 11477 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/snow.txt

@@ -345,7 +345,7 @@ state_transition_table = {
 FIXME
 
 
-Range Coding of intergers:
+Range Coding of integers:
 --------------------------
 FIXME
 

libavcodec/dvdata.h

@@ -335,7 +335,7 @@ static const uint8_t dv_quant_shifts[22][4] = {
 
 static const uint8_t dv_quant_offset[4] = { 6, 3, 0, 1 };
 
-/* NOTE: I prefer hardcoding the positionning of dv blocks, it is
+/* NOTE: I prefer hardcoding the positioning of dv blocks, it is
    simpler :-) */
 
 static const uint16_t dv_place_420[1620] = {

libavformat/ffm.c

@@ -665,7 +665,7 @@ static int64_t get_pts(AVFormatContext *s, offset_t pos)
 }
 
 /* seek to a given time in the file. The file read pointer is
-   positionned at or before pts. XXX: the following code is quite
+   positioned at or before pts. XXX: the following code is quite
    approximative */
 static int ffm_seek(AVFormatContext *s, int stream_index, int64_t wanted_pts, int flags)
 {