typo fixed

Initialization/linux-initialization-1.md

@@ -418,7 +418,7 @@ GLOBAL(initial_stack)
 ```
 
 
-that `initial_stack` symbol points to the start of the `thread_union.stack` array + `THREAD_SIZE` which is 16 killobytes and - 8 bytes. Here we need to subtract `8` bytes at the to of stack. This is necessary to guarantee illegal access of the next page memory.
+that `initial_stack` symbol points to the start of the `thread_union.stack` array + `THREAD_SIZE` which is 16 killobytes and - 8 bytes. Here we need to subtract `8` bytes at the top of stack. This is necessary to guarantee illegal access of the next page memory.
 
 After the early boot stack is set, to update the [Global Descriptor Table](https://en.wikipedia.org/wiki/Global_Descriptor_Table) with the `lgdt` instruction: