Fix misspelling end tag (#46940)

Author: easonyq

docs/csharp/advanced-topics/interop/walkthrough-creating-and-using-dynamic-objects.md

@@ -94,7 +94,7 @@ In **Solution Explorer**, double-click the *Program.cs* file. Add the following
 
 :::code language="csharp" source="./snippets/dynamic-walkthrough/program.cs" id="Snippet8":::
 
-Save the file and press <kbd>Ctrl</kdb>+<kbd>F5</kbd> to build and run the application.
+Save the file and press <kbd>Ctrl</kbd>+<kbd>F5</kbd> to build and run the application.
 
 ## Call a dynamic language library
 
@@ -114,7 +114,7 @@ After the code to load the random.py module, add the following code to create an
 
 :::code language="csharp" source="./snippets/dynamic-iron-python-walkthrough/program.cs" id="Snippet3":::
 
-Save the file and press <kbd>Ctrl</kdb>+<kbd>F5</kbd> to build and run the application.
+Save the file and press <kbd>Ctrl</kbd>+<kbd>F5</kbd> to build and run the application.
 
 ## See also