vpx/*.h, cosmetics: fix some typos

Change-Id: Ie9ead2c665c6c065a6b922ab66bae9be63483272

vpx/svc_context.h

diff --git a/vpx/svc_context.h b/vpx/svc_context.h
index 432c3c7..5bc2518 100644
--- a/vpx/svc_context.h
+++ b/vpx/svc_context.h
@@ -40,7 +40,7 @@
   int output_rc_stat;  // for outputting rc stats
   int speed;  // speed setting for codec
   int threads;
-  int aqmode;  // turns on aq-mdoe=3 (cyclic_refresh): 0=off, 1=on.
+  int aqmode;  // turns on aq-mode=3 (cyclic_refresh): 0=off, 1=on.
   // private storage for vpx_svc_encode
   void *internal;
 } SvcContext;

vpx/vpx_encoder.h

diff --git a/vpx/vpx_encoder.h b/vpx/vpx_encoder.h
index 2b17f98..955e873 100644
--- a/vpx/vpx_encoder.h
+++ b/vpx/vpx_encoder.h
@@ -150,7 +150,7 @@
   partitions can be decoded even
   though earlier partitions have
   been lost. Note that intra
-  predicition is still done over
+  prediction is still done over
   the partition boundary. */
 
   /*!\brief Encoder output packet variants