Docs: Added missing sponsor

Author: Garderoben

src/MudBlazor.Docs/Pages/Index.razor

@@ -49,6 +49,9 @@
         <MudItem xs="6" md="4">
             <Sponsor LandingPage="true" Name="Balesio" Image="Balesio.png" Website="https://blazor-agentur.ch/agency.html" />
         </MudItem>
+        <MudItem xs="6" md="4">
+            <Sponsor LandingPage="true" Name="blackhawk" Image="blackhawk.png" Website="https://blackhawk.io/" />
+        </MudItem>
         <MudItem xs="6" md="4">
             <Sponsor LandingPage="true" Name="Lithe Software Consulting" Image="Lithe.png"/>
         </MudItem>

src/MudBlazor.Docs/Pages/Mud/Project/Sponsors.razor

@@ -134,6 +134,9 @@
                         <MudItem xs="6" md="3">
                             <Sponsor Name="Balesio" Image="Balesio_color.png" Website="https://blazor-agentur.ch/agency.html" />
                         </MudItem>
+                        <MudItem xs="6" md="3">
+                            <Sponsor Name="Blackhawk" Image="blackhawk_color.png" Website="https://blackhawk.io/" />
+                        </MudItem>
                         <MudItem xs="6" md="3">
                             <Sponsor Name="Timewarp" Image="Timewarp_color.png" Website="https://timewarp.at/"/>
                         </MudItem>
@@ -162,4 +165,4 @@
             </SectionSubGroups>
         </DocsPageSection>
     </DocsPageContent>
-</DocsPage>
+</DocsPage>