Merge pull request #271 from guohuang88/branch-v1.4-FixUserGuide

v1.4 Update UserGuide

docs/UserGuide.md

@@ -527,7 +527,7 @@ Action     | Format, Examples
 **Add Tags**   | `addt INDEX t/TAG+`<br> e.g. `addt 1 t/critical`
 **Delete Tags**   | `deletet INDEX t/TAG+`<br> e.g. `deletet 1 t/critical`
 **Find Tags**   | `findt KEYWORD [MORE_KEYWORD]…​`<br> e.g. `findt diabetes wheelchair`
-**Add Event** | `adde INDEX n/NAME_OF_EVENT d/DATE_OR_DATETIME_OF_EVENT` <br> e.g. `adde 1 n/Family Visit d/30-09-2024, 12:00 - 15:00`
+**Add Event** | `adde PATIENT_INDEX n/NAME_OF_EVENT d/DATE_OR_DATETIME_OF_EVENT` <br> e.g. `adde 1 n/Family Visit d/30-09-2024, 12:00 - 15:00`
 **Delete Event** | `deletee PATIENT_INDEX e/EVENT_INDEX` <br> e.g. `deletee 1 e/1`
 **Edit Event** | `edite PATIENT_INDEX e/EVENT_INDEX n/NAME_OF_EVENT d/DATE_OR_DATETIME_OF_EVENT` <br> e.g. `edite 2 e/1 n/Mama Birthday Celebration d/21-02-2025`
 **Sort** | `sort [ATTRIBUTE]` <br> e.g. `sort p`