Sdata parser (#15)

* Typo fix

* [4.1] Adds minimal sdata-parser docs

* Minor fixes

content/chapter-parsers/date-parser/_index.md

@@ -19,7 +19,7 @@ Note that parsing will fail if the format string does not match the entire templ
    parser parser_name {
         date-parser(
             format("<format-string-for-the-date>")
-            template("<field-to-parse>'")
+            template("<field-to-parse>")
         );
     };
 ```

content/chapter-parsers/sdata-parser/_index.md

@@ -0,0 +1,24 @@
+---
+title: "Structured data (SDATA) parser"
+weight: 1850
+---
+<!-- This file is under the copyright of Axoflow, and licensed under Apache License 2.0, except for using the Axoflow and AxoSyslog trademarks. -->
+
+Available in {{% param "product.abbrev" %}} 4.1 and later.
+
+The `sdata-parser()` allows you to parse an RFC5424-style structured data string. You can use it to parse this relatively complex format separately, for example, to process malformatted messages. You can use the optional `prefix` option to add a specific string before the names of the parsed name-value pairs.
+
+## Declaration
+
+```shell
+   parser parser_name {
+        sdata-parser(
+            template("<string-or-template-to-parse>")
+            prefix("<prefix-for-parsed-name-value-pairs>")
+        );
+    };
+```
+
+{{% include-headless "chunk/option-parser-prefix.md" %}}
+
+{{% include-headless "chunk/option-parser-template.md" %}}

content/headless/chunk/option-parser-template.md

@@ -6,7 +6,7 @@
 
 |           |                              |
 | --------- | ---------------------------- |
-| Synopsis: | template("${<macroname>}") |
+| Synopsis: | `template("${<macroname>}")` |
 
 *Description:* The macro that contains the part of the message that the parser will process. It can also be a macro created by a previous parser of the log path. By default, the parser processes the entire message (`${MESSAGE}`).