Update README.md

Author: DennisDyallo

README.md

@@ -12,7 +12,7 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License. -->
 
-> Dev : ![tests-and-coverage-dev](https://github.com/Yubico/Yubico.NET.SDK/actions/workflows/test-and-cover.yml/badge.svg?branch=develop)  
+> ![tests-and-coverage-dev](https://github.com/Yubico/Yubico.NET.SDK/actions/workflows/test-and-cover.yml/badge.svg?branch=develop)  
 
 # .NET YubiKey SDK