Update info on get_native() & fix typo

Author: joeatodd

Lesson_Materials/Lecture_14_ND_Range_Kernel/index.html

@@ -330,7 +330,7 @@
 					* Nested subscript operators can be called for each dimension taking a **size_t**
 					  * E.g. a 3-dimensional accessor: acc[x][y][z] = …
 					* A pointer to memory can be retrieved by calling **get_pointer**
-					  * This returns a **multi_ptr**, which is a wrapper class for pointers to the memory in the relevant memory space
+					  * This returns a raw pointer to the data
 					</div>
 				</section>
 				<!--Slide 23-->

Lesson_Materials/Lecture_16_Coalesced_Global_Memory/index.html

@@ -138,7 +138,7 @@
 						#### Row-major vs Column-major
 					</div>
 					<div class="container" data-markdown>
-						* Coalescing global memory access is particularly important when wording in multiple dimensions.
+						* Coalescing global memory access is particularly important when working in multiple dimensions.
 						* This is because when doing so you have to convert from a position in 2d space to a linear memory space.
 						* There are two ways to do this; generally referred to as row-major and column-major.
 					</div>