Adds slovak contributors on splash

dmp-frontend/src/assets/splash/about/contributors.html

@@ -95,6 +95,13 @@
 					<p class="card-text-2">Gerda McNeill, Raman Ganguly, Mihaela Hubert</p>
 				</div>
 			</div>
+			<div class="card flex-row">
+				<img class="col-4 flag" alt="Flag of Slovakia" src="../assets/img/flag-of-slovakia.png">
+				<div class="col-8 card-body pl-0" class="flex-column align-items-center">
+					<p class="card-text-1">SLOVAK CENTRE FOR SCIENTIFIC AND TECHNICAL INFORMATION</p>
+					<p class="card-text-2">Silvia Horáková, Richard Rac, Iryna Kuchma</p>
+				</div>
+			</div>
 		</div>
 	</section>
 	<!-- Footer-->