s/mixier/mixer/g
fix brew package name
@@ -253,7 +253,7 @@ $ sudo make install
2. Install brew.
3. Execute follow command.
```
-$ brew install sdl2 sdl2_mixier sdl2_ttf
+$ brew install sdl2 sdl2_mixer sdl2_ttf
```
##### Build
@@ -287,7 +287,7 @@ $ make install
2. Install brew.
3. Execute follow command.
```
-$ brew install sdl sdl_mixier sdl_ttf
+$ brew install sdl sdl_mixer sdl_ttf
```
##### Build
