feat: info for the search

src/.vuepress/components/SearchInput.vue

@@ -9,17 +9,19 @@
           <v-text-field
             v-model="input"
             label="Your Search String"
+            hint="Operators: OR, AND and *"
+            persistent-hint
             outlined
             dense
-            hide-details
           ></v-text-field>
         </v-col>
         <v-col
           cols="2"
-          class="d-flex align-center"
+          class="d-flex"
         >
           <v-btn
             tile
+            large
             color="primary"
             @click="emitSearch"
           >