add note formatting

Author: TylerMSFT

docs/build/common-visual-cpp-arm-migration-issues.md

@@ -7,7 +7,8 @@ ms.date: "05/06/2019"
 
 This document describes some of the common issues that you might encounter when you migrate code from x86 or x64 architectures to the ARM architecture. It also describes how to avoid these issues, and how to use the compiler to help identify them.
 
-When this article refers to the ARM architecture, it means both ARM32 and ARM64.
+> [!NOTE]
+> When this article refers to the ARM architecture, it applies to both ARM32 and ARM64.
 
 ## Sources of migration issues
 

docs/cpp/import-export-module.md

@@ -40,7 +40,7 @@ namespace ModuleA_NS
 }
 ```
 
-Non-exported names aren't visible to code that imports the module:
+Nonexported names aren't visible to code that imports the module:
 
 ```cpp
 import ModuleA;