Fix typo and remove executable bit on source code files

Change-Id: I0ac46bf80a4708d190c148f8b72bfcf4ea1168b1
diff --git a/include/hardware/audio_effect.h b/include/hardware/audio_effect.h
index 2940b1a..8fa3064 100644
--- a/include/hardware/audio_effect.h
+++ b/include/hardware/audio_effect.h
@@ -788,7 +788,7 @@
     uint32_t   samplingRate;    // sampling rate
     uint32_t   channels;        // channel mask (see audio_channel_mask_t in audio.h)
     buffer_provider_t bufferProvider;   // buffer provider
-    uint8_t    format;          // Audio format  (see see audio_format_t in audio.h)
+    uint8_t    format;          // Audio format (see audio_format_t in audio.h)
     uint8_t    accessMode;      // read/write or accumulate in buffer (effect_buffer_access_e)
     uint16_t   mask;            // indicates which of the above fields is valid
 } buffer_config_t;