Fix incorrect tooltip on Add Person button (#3355)

The tooltip for the add person button incorrectly says "Create Area" when hovered. This should fix it, I think.

src/panels/config/person/ha-config-person.ts

@@ -112,7 +112,7 @@ class HaConfigPerson extends LitElement {
       <paper-fab
         ?is-wide=${this.isWide}
         icon="hass:plus"
-        title="Create Area"
+        title="Add Person"
         @click=${this._createPerson}
       ></paper-fab>
     `;