docs(auto-jobs): implementing markdown table instead of image

subjects/devops/auto-jobs/README.md

@@ -58,7 +58,14 @@ You can use the `crontab` command to manage your jobs. This command can be calle
 
 ##### Table: Crontab Fields (Linux Crontab Syntax):
 
-![Table: Crontab Fields](resources/cronTasks-Table.png)
+| Field | Description  |               Allowed Value |
+| ----: | ------------ | --------------------------: |
+|   MIN | Minute field |                     0 to 59 |
+|  HOUR | Hour field   |                     0 to 23 |
+|   DOM | Day of month |                        1-31 |
+|   MON | Month field  |                        1-12 |
+|   DOW | Day Of Week  |                         0-6 |
+|   CMD | Command      | Any command to be executed. |
 
 ##### Examples: