Fix typo

Author: dariatiurina

src/Components/test/E2ETest/Tests/ErrorBoundaryTest.cs

@@ -130,7 +130,7 @@ public void CanHandleErrorsAfterDisposingComponent()
     public void CanHandleErrorsAfterDisposingErrorBoundaryComponent()
     {
         var container = Browser.Exists(By.Id("multiple-errors-at-once-test"));
-        container.FindElement(By.ClassName("throw-miltiple-errors")).Click();
+        container.FindElement(By.ClassName("throw-multiple-errors")).Click();
         // The error boundary is still there, so we see the error message
         Browser.Collection(() => container.FindElements(By.ClassName("error-message")),
             elem => Assert.Equal("OnInitializedAsyncError", elem.Text));

src/Components/test/testassets/BasicTestApp/ErrorBoundaryTest/ErrorBoundaryCases.razor

@@ -83,7 +83,7 @@
             </ErrorContent>
         </ErrorBoundary>
     }
-    <button class="throw-miltiple-errors" @onclick="@(() => twoErrorsInChild = true)">Throw multiple errors in child</button>
+    <button class="throw-multiple-errors" @onclick="@(() => twoErrorsInChild = true)">Throw multiple errors in child</button>
 </div>
 
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