Fix a teeny tiny typo (#18151)

Author: serpent5

aspnetcore/data/ef-mvc/update-related-data.md

@@ -221,7 +221,7 @@ In *Views/Instructors/Edit.cshtml*, add a **Courses** field with an array of che
 
 <a id="notepad"></a>
 > [!NOTE]
-> When you paste the code in Visual Studio, line breaks might be changed in a way that breaks the code. If the code looks different after pasting, press Ctrl+Z one time to undo the automatic formatting. This will fix the line breaks so that they look like what you see here. The indentation doesn't have to be perfect, but the `@</tr><tr>`, `@:<td>`, `@:</td>`, and `@:</tr>` lines must each be on a single line as shown or you'll get a runtime error. With the block of new code selected, press Tab three times to line up the new code with the existing code. This problem is fixed in Visual Studio 2019.
+> When you paste the code in Visual Studio, line breaks might be changed in a way that breaks the code. If the code looks different after pasting, press Ctrl+Z one time to undo the automatic formatting. This will fix the line breaks so that they look like what you see here. The indentation doesn't have to be perfect, but the `@:</tr><tr>`, `@:<td>`, `@:</td>`, and `@:</tr>` lines must each be on a single line as shown or you'll get a runtime error. With the block of new code selected, press Tab three times to line up the new code with the existing code. This problem is fixed in Visual Studio 2019.
 
 [!code-html[](intro/samples/cu/Views/Instructors/Edit.cshtml?range=35-61)]