fix typos

examples/custom_backend.c

@@ -261,7 +261,7 @@ static ma_result ma_context_get_device_info__sdl(ma_context* pContext, ma_device
     of the device's _actual_ ideal format.
     
     Note: With Emscripten, it looks like non-zero values need to be specified for desiredSpec. Whatever is specified in
-    desiredSpec will be used by SDL since it uses it just does it's own format conversion internally. Therefore, from what
+    desiredSpec will be used by SDL since it uses it just does its own format conversion internally. Therefore, from what
     I can tell, there's no real way to know the device's actual format which means I'm just going to fall back to the full
     range of channels and sample rates on Emscripten builds.
     */

examples/simple_enumeration.c

@@ -1,7 +1,7 @@
 /*
 Demonstrates how to enumerate over devices.
 
-Device enumaration requires a `ma_context` object which is initialized with `ma_context_init()`. Conceptually, the
+Device enumeration requires a `ma_context` object which is initialized with `ma_context_init()`. Conceptually, the
 context sits above a device. You can have many devices to one context.
 
 If you use device enumeration, you should explicitly specify the same context you used for enumeration in the call to

examples/simple_mixing.c

@@ -4,7 +4,7 @@ Demonstrates one way to load multiple files and play them all back at the same t
 When mixing multiple sounds together, you should not create multiple devices. Instead you should create only a single
 device and then mix your sounds together which you can do by simply summing their samples together. The simplest way to
 do this is to use floating point samples and use miniaudio's built-in clipper to handling clipping for you. (Clipping
-is when sample are clampled to their minimum and maximum range, which for floating point is -1..1.)
+is when sample are clamped to their minimum and maximum range, which for floating point is -1..1.)
 
 ```
 Usage:   simple_mixing [input file 0] [input file 1] ... [input file n]