update ug

docs/UserGuide.md

@@ -171,13 +171,13 @@ and optional fields with a different order as the format above.
 The examples above result in successful patient record additions, which are then saved automatically.
 
 <div style="background-color: #F5F9FE; padding: 12px; border-radius: 4px; border-left: 4px solid #2196F3; color: #1A1A1A;">
-🚨 <b>Best Practices of using</b> <em><strong>"add" command together with "addVisit" command</strong></em> <b>:</b> <br>
+💡 <b>Best Practices of using</b> <em><strong>"add" command together with "addVisit" command</strong></em> <b>:</b> <br>
 1.) When a new patient visits the clinic, we use "add" command. <br>
 <ins> The "add" command is primarily used for adding a patient record with the patient's basic key details information </ins> (such as Name , NRIC , Phone Number), and that Name, NRIC, Patient's First Visit Date, are <ins>Compulsory fields</ins>. <br>
 Other <ins>Optional fields</ins> includes e.g. Phone Number, Home Address, DOB, <i>and</i> Diagnoses and Medications from patient's first visit. 
 
 2.) If the <ins>same patient(with same NRIC)</ins> comes back to the clinic for a new visit, we use "addVisit" command,  
-to key in the visit Date&Time of this new visit event(which is a compulsory field along with NRIC), AND the diagnoses of illnesses and medications prescribed for this new visit event (which are optional fields).
+to key in the visit Date&Time of this new visit event(which is a compulsory field along with NRIC), AND the Diagnoses of illnesses and Medications prescribed for this new visit event (which are optional fields).
 
 3.) We then use "list" command to see all patient information.
 </div>