start to work on Help page

on localhost image did not show up, I don't know why.

still WIP

components/Nav/Navbar.vue

@@ -61,7 +61,7 @@ const computedNavigation = computed(() => {
     </template>
     <v-app-bar-title>
       <span class="d-flex align-center">
-        Knowledge database of all known anti-phage systems by
+        Knowledge database of all known anti-phage systems
       </span>
     </v-app-bar-title>
     <template #append v-if="!mobile">