minor touchups

src/components/Amount.vue

@@ -6,7 +6,7 @@
     </template>
     <template v-slot:append-inner>
       <v-btn @click="os.amountIsTokenA=!os.amountIsTokenA" variant="outlined" class="mr-2">
-        {{ amountToken.symbol }}
+        {{ os.amountToken.symbol }}
       </v-btn>
       <v-btn :text="os.amountIsTotal ? 'total' : 'per tranche'" variant="outlined"
              @click="os.amountIsTotal=!os.amountIsTotal" class="total"/>
@@ -24,7 +24,6 @@ import {computed} from "vue";
 const s = useStore()
 const os = useOrderStore()
 
-const amountToken = computed( ()=>os.amountIsTokenA ? os.tokenA.symbol : os.tokenB.symbol )
 const inToken = computed( ()=>os.buy ? os.tokenB : os.tokenA )
 const maxAmount = computed(()=>{
   const balance = s.balances[inToken]