Fix checkstyle

docs/DeveloperGuide.md

@@ -304,7 +304,7 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
 **Extensions**
 
 * 2a. At least one of the required information is empty or invalid.
-  
+
     * 2a1. HR Insight shows an error message.
 
       Use case ends.
@@ -314,7 +314,7 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
     * 3a1. HR Insight indicates that the employee already exists.
 
       Use case ends.
-      
+
 **Use case: Edit an Employee**
 
 **MSS**
@@ -339,7 +339,7 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
     * 3a1. HR Insight shows an error message.
 
       Use case resumes from step 2.
-      
+
 * 3b. User does not specify any new information for the employee.
 
    * 3b1. HR Insight shows an error message that at least one field to edit must be provided.
@@ -422,7 +422,7 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
 * 3b. User provides a wrong index (Either negative or more than current headcount).
 
     * 3b1. HR Insight shows an error message.
-  
+
   Use case ends.
 
 * 3c. User didn't provide +/- when stating the claim amount.
@@ -453,7 +453,7 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
 * 3a. User provides a wrong index (Either negative or more than current headcount).
 
     * 3a1. HR Insight shows an error message.
-  
+
   Use case ends.
 
 * 3b. User provides a wrong month (Either negative or more than 12).
@@ -474,16 +474,16 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
 **Extensions**
 * 1a. User provides the index of a specific employee.
   * 1a1. HR Insight shows the leave dates of the specified employee.
-  
+
   Use case ends.
 * 1b. User provides a specific month.
   * 1b1. HR Insight shows the leave dates of all employees occurring in the specified month.
 
   Use case ends
 * 1c. User provides a specific department.
-  * 1c1. HR Insight shows the leave dates of all employees in the specified department. 
+  * 1c1. HR Insight shows the leave dates of all employees in the specified department.
 
-  Use case ends. 
+  Use case ends.
 * 1d. User provides an invalid index/month/department.
   * 1d1. HR Insight shows an error message.
 
@@ -500,10 +500,10 @@ Priorities: High (must have) - `* * *`, Medium (nice to have) - `* *`, Low (unli
 **Extensions**
 * 1a. User provides a specific month.
   * 1a1. HR Insight shows all birthdays in the specified month.
-  
+
   Use case ends.
 * 1b. User provides an invalid month.
-  * 1b1. HR Insight shows an error message. 
+  * 1b1. HR Insight shows an error message.
 
   Use case ends.
 

docs/UserGuide.md

@@ -36,9 +36,9 @@ HR Insight is a **desktop app for HR people, optimized for use via a Line Interf
    - `delete 3` : Deletes the 3rd employee shown in the current list.
 
    - `claim 2 $/-60` : Deducts $60 from the claims of the 2nd employee in the list.
-   
+
    - `view n/1,2 s/1,2` : View the name and salary of employees with list index of 1 & 2 respectively.
-   
+
    - `clear` : Deletes all employees from the database.
 
    - `exit` : Exits the app.
@@ -170,7 +170,7 @@ Format:  `leave INDEX m/MONTHS`
 - The `MONTHS` refers to the month of the leave the employee is taking in integer format (between 1-12).
 - Positive `MONTHS` add leaves on the specified months and negative `MONTHS` remove them.
 
-Examples: 
+Examples:
 - `list` followed by `leave 1 m/3,4` adds leaves in March and April for the 1st employee in the list.
 - `list` followed by `leave 3 m/11,-12` adds a leave in Nov and removes a leave in Dec for the 3rd employee in the list.
 
@@ -184,7 +184,7 @@ Format:  `view_leave [INDEX] [m/Month] [d/DEPARTMENT]`
 - The index of the employee, month and department are optional arguments.
 - If no one has planned leave dates for the month, **No one is taking leave** output is shown.
 
-Examples: 
+Examples:
 - `view_leave` displays all employees who have planned leave dates in the current year
 - `view_leave m/10` displays all employees that are taking leave in October
 - `view_leave m/10 d/IT` displays all employees in the IT department that are taking leave in October.
@@ -200,7 +200,7 @@ Format:  `birthday [m/MONTH]`
 - The month argument is optional. If **no month** is provided, the upcoming birthdays in the current month are listed.
 - If there is no birthday in the month provided or the birthday is past the current date in the same month, return **No upcoming birthdays**
 
-Examples: 
+Examples:
 - `birthday` followed by `10` displays all employees who have their birthday in the month of October
 
 

src/main/java/seedu/address/logic/commands/RedoCommand.java

@@ -16,7 +16,7 @@ public class RedoCommand extends Command {
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Redo the most recent command that was undone.";
 
-    private static final String MESSAGE_SUCCESS = 
+    private static final String MESSAGE_SUCCESS =
             "The last command that modified the employee list has been redone!\n"
             + "Successfully redone the following command: %1$s";
 

src/main/java/seedu/address/logic/commands/UndoCommand.java

@@ -16,7 +16,7 @@ public class UndoCommand extends Command {
     public static final String MESSAGE_USAGE = COMMAND_WORD
             + ": Undo the most recent command that modified the employee list.";
 
-    private static final String MESSAGE_SUCCESS = 
+    private static final String MESSAGE_SUCCESS =
             "The last command that modified the employee list has been undone!\n"
             + "Successfully undone the following command: %1$s";