Update DeveloperGuide.md

docs/DeveloperGuide.md

@@ -187,9 +187,10 @@ assumed to be at the `'Initial Application'` stage.
 The `edit` command gives users the ability to edit the applicants' details. The details that can be edited include `Name`, `Phone`, `Email`, `Address`, `Stage`, `Role`, `Note` and `Tag`. Note that at least one field has to be chosen.
 
 #### How the feature is implemented
-* The `edit` is implemented using the `EditApplicantCommand`, `EditApplicantDescriptor` and `EditApplicantCommandParser` classes
+* The `edit` is implemented using the `EditApplicantCommand`, `EditApplicantDescriptor` and `EditApplicantCommandParser` classes.
 * The `edit` receives an index of the applicant to be edited and an EditApplicantDescriptor class which consists of the updated fields of the applicant.
-* Note that the checks will be done on the fields that the user want to input to ensure is valid. For example, `Stage` can only be one of the four forms `Initial Application`, `Technical Assessment`, `Interview`, `Decision & Offer`. Hence, if user was to input `edit 1 /stage WaitListed`, this will not be possible and the applicant will not be edited.
+* Note that checks will be done on the fields that the user want to input to ensure is valid. For example, `Stage` can only be one of the four forms `Initial Application`, `Technical Assessment`, `Interview`, `Decision & Offer`. Hence, if user was to input `edit 1 /stage WaitListed`, this will not be possible and the applicant will not be edited.
+* Similarly, a check will be done to ensure that the index is valid.
 
 ![EditSequenceDiagram](images/EditSequenceDiagram.png)