spelling: into

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

includes/stb_image.h

@@ -67,7 +67,7 @@ See final bullet items below for more info on SIMD.
 
 - Added STBI_MALLOC, STBI_REALLOC, and STBI_FREE macros for replacing
 the memory allocator. Unlike other STBI libraries, these macros don't
-support a context parameter, so if you need to pass a context in to
+support a context parameter, so if you need to pass a context into
 the allocator, you'll have to store it in a global or a thread-local
 variable.
 

src/8.guest/2021/3.tessellation/terrain_cpu_src/8.3.cpuheight.fs

@@ -6,6 +6,6 @@ in float Height;
 
 void main()
 {
-    float h = (Height + 16)/32.0f;	// shift and scale the height in to a grayscale value
+    float h = (Height + 16)/32.0f;	// shift and scale the height into a grayscale value
     FragColor = vec4(h, h, h, 1.0);
 }