frequency input should be limited to numbers

Author: liamcottle

public/index.html

@@ -1088,7 +1088,7 @@
                         <!-- interface frequency -->
                         <div v-if="newInterfaceType === 'RNodeInterface'" class="mb-2">
                             <label class="block mb-2 text-sm font-medium text-gray-900">Frequency (Hz)</label>
-                            <input type="text" v-model="newInterfaceFrequency" class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5">
+                            <input type="number" v-model="newInterfaceFrequency" class="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5">
                             <div class="text-xs text-gray-600">{{ formatFrequency(newInterfaceFrequency) }}</div>
                         </div>