update filecheck docs (#1460)

Author: ilyam8

README.md

@@ -40,10 +40,11 @@ the [official installation method](https://github.com/netdata/netdata/blob/maste
 No further action required. If you have used a different installation method and need to set the capabilities manually,
 see the appropriate collector readme.
 
-| Capability    |                                               Required by                                                |
-|:--------------|:--------------------------------------------------------------------------------------------------------:|
-| CAP_NET_RAW   |      [Ping](https://github.com/netdata/go.d.plugin/blob/master/modules/ping/README.md#requirements)      |
-| CAP_NET_ADMIN | [Wireguard](https://github.com/netdata/go.d.plugin/blob/master/modules/wireguard/README.md#requirements) |
+| Capability          |                                       Required by                                        |
+|:--------------------|:----------------------------------------------------------------------------------------:|
+| CAP_NET_RAW         |      [Ping](https://github.com/netdata/go.d.plugin/tree/master/modules/ping#readme)      |
+| CAP_NET_ADMIN       | [Wireguard](https://github.com/netdata/go.d.plugin/tree/master/modules/wireguard#readme) |
+| CAP_DAC_READ_SEARCH | [Filecheck](https://github.com/netdata/go.d.plugin/tree/master/modules/filecheck#readme) |
 
 ## Available modules
 

modules/filecheck/metadata.yaml

@@ -30,20 +30,7 @@ modules:
       multi_instance: true
       additional_permissions:
         description: |
-          `netdata` user needs the following permissions on all the directories in pathname that lead to the file/dir:
-
-          - files monitoring: `execute`.
-          - directories monitoring: `read` and `execute`.
-          
-          If you need to modify the permissions we
-          suggest [to use file access control lists](https://linux.die.net/man/1/setfacl):
-          
-          ```cmd
-          setfacl -m u:netconfig:rx file ...
-          ``` 
-
-          > **Warning**: For security reasons, this should not be applied recursively, but only to the exact set of directories
-          > that lead to the file/dir you want to monitor.
+          This collector requires the DAC_READ_SEARCH capability, but it is set automatically during installation, so no manual configuration is needed.
       default_behavior:
         auto_detection:
           description: ""