Consistent placeholder text

Co-Authored-By: Frank Elsinga <frank.elsinga@tum.de>

src/pages/EditMonitor.vue

@@ -265,12 +265,12 @@
                             <!-- SNMP Monitor Type -->
                             <div v-if="monitor.type === 'snmp'" class="my-3">
                                 <label for="snmp_community_string" class="form-label">{{ $t("Community String") }}</label>
-                                <input id="snmp_community_string" v-model="monitor.snmpCommunityString" type="text" class="form-control" required placeholder="Example: public">
+                                <input id="snmp_community_string" v-model="monitor.snmpCommunityString" type="text" class="form-control" required placeholder="public">
                             </div>
 
                             <div v-if="monitor.type === 'snmp'" class="my-3">
                                 <label for="snmp_oid" class="form-label">{{ $t("OID (Object Identifier)") }}</label>
-                                <input id="snmp_oid" v-model="monitor.snmpOid" type="text" class="form-control" required pattern="^([0-2])((\.0)|(\.[1-9][0-9]*))*$" title="Please enter a valid OID, e.g. 1.3.6.1.4.1.9.6.1.101" placeholder="Example: 1.3.6.1.4.1.9.6.1.101">
+                                <input id="snmp_oid" v-model="monitor.snmpOid" type="text" class="form-control" required pattern="^([0-2])((\.0)|(\.[1-9][0-9]*))*$" title="Please enter a valid OID, e.g. 1.3.6.1.4.1.9.6.1.101" placeholder="1.3.6.1.4.1.9.6.1.101">
                             </div>
 
                             <div v-if="monitor.type === 'snmp'" class="my-3">