typo: imporved -> improved

Fixes #1724

Author: nschonni

docs/code-quality/C26403.md

@@ -21,7 +21,7 @@ Owner pointers are like unique pointers: they own a resource exclusively, and ma
 For more information, see the [C++ Core Guidelines](http://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#r-resource-management).
 
 ## Remarks
-- Currently (Visual Studio 2017 version 15.3) this check doesn’t give the exact path which fails to release the resource. This behavior may be imporved in future releases. It may be difficult to find exact location for a fix. The better approach is to try to replace plain pointers in complex functions with unique pointers to avoid any risks.
+- Currently (Visual Studio 2017 version 15.3) this check doesn’t give the exact path which fails to release the resource. This behavior may be improved in future releases. It may be difficult to find exact location for a fix. The better approach is to try to replace plain pointers in complex functions with unique pointers to avoid any risks.
 
 - The check may discard an over-complicated function in order to not block code analysis. Generally, the complexity of functions should be maintained under some reasonable threshold. We may consider adding a local complexity check to the C++ Core Guidelines module if there is clear demand for it. This limitation is applicable to other rules which are sensitive to data flow.
 
@@ -44,4 +44,4 @@ catch (const std::exception& e)
 }
 
 delete [] sequence;
-```
+```