Formatting fixes

content/headless/chunk/option-destination-diskbuffer.md

@@ -127,33 +127,33 @@ If you want to avoid performance fluctuations:
 In the following case reliable disk-buffer() is used.
 
 ```shell
-   destination d_demo {
-        network(
-            "127.0.0.1"
-            port(3333)
-            disk-buffer(
-                flow-control-window-bytes(10000)
-                capacity-bytes(2000000)
-                reliable(yes)
-                dir("/tmp/disk-buffer")
-            )
-        );
-    };
+destination d_demo {
+    network(
+        "127.0.0.1"
+        port(3333)
+        disk-buffer(
+            flow-control-window-bytes(10000)
+            capacity-bytes(2000000)
+            reliable(yes)
+            dir("/tmp/disk-buffer")
+        )
+    );
+};
 ```
 
 In the following case normal disk-buffer() is used.
 
 ```shell
-   destination d_demo {
-        network(
-            "127.0.0.1"
-            port(3333)
-               disk-buffer(
-                flow-control-window-size(10000)
-                capacity-bytes(2000000)
-                reliable(no)
-                dir("/tmp/disk-buffer")
-            )
-        );
-    };
+destination d_demo {
+    network(
+        "127.0.0.1"
+        port(3333)
+            disk-buffer(
+            flow-control-window-size(10000)
+            capacity-bytes(2000000)
+            reliable(no)
+            dir("/tmp/disk-buffer")
+        )
+    );
+};
 ```

content/headless/chunk/option-destination-hook.md

@@ -57,19 +57,19 @@ To execute an external program when the {{% param "product.abbrev" %}} configura
 *Description:* Defines an external program that is executed when the {{% param "product.abbrev" %}} configuration is stopped or torn down, for example, on shutdown or during a {{% param "product.abbrev" %}} reload.
 
 
-### Example: Using the hook-commands() with a network source
+### Example: Using hook-commands() with a network source
 
 In the following example, the `hook-commands()` is used with the `network()` driver and it opens an [iptables](https://en.wikipedia.org/wiki/Iptables "https://en.wikipedia.org/wiki/Iptables") port automatically as {{% param "product.abbrev" %}} is started/stopped.
 
 The assumption in this example is that the `LOGCHAIN` chain is part of a larger ruleset that routes traffic to it. Whenever the {{% param "product.abbrev" %}} created rule is there, packets can flow, otherwise the port is closed.
 
 ```shell
-   source {
-       network(transport(udp)
-        hook-commands(
-              startup("iptables -I LOGCHAIN 1 -p udp --dport 514 -j ACCEPT")
-              shutdown("iptables -D LOGCHAIN 1")
-            )
-         );
-    };
+source {
+    network(transport(udp)
+    hook-commands(
+          startup("iptables -I LOGCHAIN 1 -p udp --dport 514 -j ACCEPT")
+          shutdown("iptables -D LOGCHAIN 1")
+        )
+     );
+};
 ```

content/headless/chunk/option-destination-on-error.md

@@ -4,7 +4,7 @@
 
 ## on-error()
 
-| Type:        | One of: `drop-message, drop-property, fallback-to-string, silently-drop-message, silently-drop-property, silently-fallback-to-string` |
+| Type:        | One of: `drop-message`, `drop-property`, `fallback-to-string`, `silently-drop-message`, `silently-drop-property`, `silently-fallback-to-string` |
 |--------------|-----------|
 | Default:     | Use the global setting (which defaults to `drop-message`)  |
 

content/headless/chunk/option-persist-name.md

@@ -12,8 +12,7 @@
 *Description:* If you receive the following error message during {{% param "product.abbrev" %}} startup, set the `persist-name()` option of the duplicate drivers:
 
 ```shell
-   Error checking the uniqueness of the persist names, please override it with persist-name option. Shutting down.
+Error checking the uniqueness of the persist names, please override it with persist-name option. Shutting down.
 ```
 
 This error happens if you use identical drivers in multiple sources, for example, if you configure two file sources to read from the same file. In this case, set the `persist-name()` of the drivers to a custom string, for example, `persist-name("example-persist-name1")`.
-