doc: 移除 SDK 文本

Author: ArgoZhang

src/BootstrapBlazor.Server/Components/Layout/HomeLayout.razor

@@ -60,7 +60,7 @@
     </div>
     <div class="footer-info">
         <div class="d-flex">
-            <div>SDK .NET @Version on @OS</div>
+            <div>.NET @Version on @OS</div>
             <div class="ms-1">BB @VersionService.Version</div>
             <FooterCounter></FooterCounter>
             <CacheCounter></CacheCounter>