agi: Spelling fixes

Correct typos of the following word families:

pretend
speech

ASTERISK-29714

Change-Id: I7d0527c329cda07552247ea11b2d7db207a3d87d

agi/eagi-test.c

@@ -93,7 +93,7 @@ static char *wait_result(void)
 				fprintf(stderr, "Got %d/%d bytes of audio\n", res, bytes);
 #endif
 				bytes += res;
-				/* Prentend we detected some audio after 3 seconds */
+				/* Pretend we detected some audio after 3 seconds */
 				if (bytes > 16000 * 3) {
 					return "Sample Message";
 					bytes = 0;

agi/jukebox.agi

@@ -348,7 +348,7 @@ sub music_dir_cache {
 }
 
 # this function will fill the @masterCacheList of all the files that
-# need to have text2speeced ulaw files of their names generated
+# need to have text2speech ulaw files of their names generated
 sub music_dir_cache_genlist {
 	my $dir = shift;
 	if (!opendir(THEDIR, rmts($MUSIC.$dir))) {