refactor(Empty): fix typo error (#7670)

Author: ArgoZhang

src/BootstrapBlazor/Components/Empty/Empty.razor

@@ -1,10 +1,10 @@
-@namespace BootstrapBlazor.Components
+@namespace BootstrapBlazor.Components
 @inherits BootstrapComponentBase
 
 <div @attributes="AdditionalAttributes" class="@ClassString">
     @if (Template != null)
     {
-        <div class="empty-telemplate">
+        <div class="empty-template">
             @Template
         </div>
     }

src/BootstrapBlazor/Components/Empty/Empty.razor.scss

@@ -1,4 +1,4 @@
-@use "../../wwwroot/scss/variables" as *;
+@use "../../wwwroot/scss/variables" as *;
 
 .empty {
     --bb-empty-image-margin: #{$bb-empty-image-margin};
@@ -9,7 +9,7 @@
         margin: var(--bb-empty-image-margin);
     }
 
-    .empty-telemplate {
+    .empty-template {
         margin: var(--bb-empty-template-margin);
     }
 }

test/UnitTest/Components/SelectTableTest.cs

@@ -603,7 +603,7 @@ public void EmptyTemplate_OK()
             });
         });
 
-        cut.Contains("<div class=\"empty\"><div class=\"empty-telemplate\">empty-template</div></div>");
+        cut.Contains("<div class=\"empty\"><div class=\"empty-template\">empty-template</div></div>");
     }
 
     [Fact]