Update styles, make the grammar checker happy

Updates to make the Acrolinx grammar checker happy (it likes present tense, active verbs, and simple sentences). 
Copied a bit more of Amy's suggestion for clarity.
Added version-specific availability info.
Formatted indents like other bullet points in this section.

Author: colin-home

docs/sanitizers/asan-runtime.md

@@ -87,11 +87,12 @@ For more information, see the [Differences with Clang 12.0](./asan.md#difference
 > The option `windows_hook_rtl_allocators`, previously an opt-in feature while AddressSanitizer was experimental, is now enabled by default.
 
 - `iat_overwrite`
-String, set to `"error"` by default. Possible values are `"error"`, `"protect"`, and `"ignore"`. Certain modules (commonly drivers) may overwrite the [`import address table`](/windows/win32/debug/pe-format#import-address-table) of different modules to provide custom implementations of certain functions for any reason. This option manages the protection level from the runtime regarding overwrites for specific [`memoryapi.h`](/windows/win32/api/memoryapi/) functions.
-  * The functions currently tracked for protection are [`VirtualAlloc`](/windows/win32/api/memoryapi/nf-memoryapi-virtualalloc), [`VirtualProtect`](/windows/win32/api/memoryapi/nf-memoryapi-virtualprotect), and [`VirtualQuery`](/windows/win32/api/memoryapi/nf-memoryapi-virtualquery).
-  * If set to `"error"`, the default value, the runtime will report an error whenever an overwrite is detected.
-  * If set to `"protect"`, the runtime will attempt to avoid using the overwritten definition and proceed. This means the `memoryapi` definition of the function will be used from inside the runtime to avoid infinite recursion. Other modules in the process will still use the overwritten definition.
-  * If set to `"ignore"`, the runtime will not attempt to correct any overwrite and proceed with execution.
+  String, set to `"error"` by default. Other possible values are `"protect"` and `"ignore"`. Some modules may overwrite the [`import address table`](/windows/win32/debug/pe-format#import-address-table) of other modules to customize implementations of certain functions. For example, drivers commonly provide custom implementations for specific hardware. The `iat_overwrite` option manages the AddressSanitizer runtime's protection against overwrites for specific [`memoryapi.h`](/windows/win32/api/memoryapi/) functions. The runtime currently tracks the [`VirtualAlloc`](/windows/win32/api/memoryapi/nf-memoryapi-virtualalloc), [`VirtualProtect`](/windows/win32/api/memoryapi/nf-memoryapi-virtualprotect), and [`VirtualQuery`](/windows/win32/api/memoryapi/nf-memoryapi-virtualquery) functions for protection. This option is available in Visual Studio 2022 version 17.5 preview 1 and later versions. The following `iat_overwrite` values control how the runtime reacts when protected functions are overwritten:
+
+  - If set to `"error"` (the default), the runtime reports an error whenever an overwrite is detected.
+  - If set to `"protect"`, the runtime attempts to avoid using the overwritten definition and proceeds. Effectively, the original `memoryapi` definition of the function is used from inside the runtime to avoid infinite recursion. Other modules in the process still use the overwritten definition.
+  - If set to `"ignore"`, the runtime doesn't attempt to correct any overwritten functions and proceeds with execution.
+
 
 ## <a name="intercepted_functions"></a> AddressSanitizer list of intercepted functions (Windows)