Update README.md

docs/README.md

@@ -50,17 +50,17 @@ You can easily search for tasks which
 You can use the following commands to search tasks.
 
 Example 1: `search_by_date <date>` to search tasks by date  
-Example 2: `search_by_date <keyword>` to search tasks by keyword  
+Example 2: `search_by_keyword <keyword>` to search tasks by keyword  
 
 ## Marking/Unmarking Tasks
 You can mark a task as done or reversely unmark it to leave it undone, so that you can clearly see your current progress in your task list.
 
 You can use the following commands to mark/unmark tasks.
 
 Example 1: `mark <id>` to mark a task  
-Example 2: `mark <id><id><id>` to mark multiple tasks  
+Example 2: `mark <id> <id> <id>` to mark multiple tasks  
 Example 3: `unmark <id>` to unmark a task  
-Example 4: `unmark <id><id><id>` to unmark multiple tasks  
+Example 4: `unmark <id> <id> <id>` to unmark multiple tasks  
 
 ## Rescheduling Tasks
 You can reschedule the date of a deadline or event task, so that you can flexibly manage your tasks without the trouble of deleting the original task and adding it again with the new date.