Correct SpatialLayer in VP9 unittest.

Bug: None
Change-Id: If8b26c8e7afa380f109d71a93b78bad784da34ad
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/205961
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33187}

modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc

diff --git a/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc b/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc
index f21c046..005eda63 100644
--- a/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc
+++ b/modules/video_coding/codecs/vp9/test/vp9_impl_unittest.cc
@@ -2308,7 +2308,7 @@
 }
 
 TEST(Vp9SpeedSettingsTrialsTest, PerLayerFlagsWithSvc) {
-  // Per-temporal and satial layer speed settings:
+  // Per-temporal and spatial layer speed settings:
   // SL0:   TL0 = speed 5, TL1/TL2 = speed 8.
   // SL1/2: TL0 = speed 7, TL1/TL2 = speed 9.
   // Deblocking-mode per spatial layer: