Link to function catalog docs for config props (#526)

Prior to this commit, each app documented its available config props
in its README.adoc. Now that the functions have been moved to the
function catalog, these inline docs are replaced w/ a link to the
respective function catalog docs.

See #524

applications/processor/splitter-processor/README.adoc

@@ -16,13 +16,8 @@ If the incoming type is `byte[]` and the content type is set to `text/plain` or
 
 == Options
 
-//tag::configuration-properties[]
-$$splitter.apply-sequence$$:: $$Add correlation/sequence information in headers to facilitate later aggregation.$$ *($$Boolean$$, default: `$$true$$`)*
-$$splitter.charset$$:: $$The charset to use when converting bytes in text-based files to String.$$ *($$String$$, default: `$$<none>$$`)*
-$$splitter.delimiters$$:: $$When expression is null, delimiters to use when tokenizing {@link String} payloads.$$ *($$String$$, default: `$$<none>$$`)*
-$$splitter.expression$$:: $$A SpEL expression for splitting payloads.$$ *($$Expression$$, default: `$$<none>$$`)*
-$$splitter.file-markers$$:: $$Set to true or false to use a {@code FileSplitter} (to split text-based files by line) that includes (or not) beginning/end of file markers.$$ *($$Boolean$$, default: `$$<none>$$`)*
-$$splitter.markers-json$$:: $$When 'fileMarkers == true', specify if they should be produced as FileSplitter.FileMarker objects or JSON.$$ *($$Boolean$$, default: `$$true$$`)*
+//tag::configuration-properties[link-to-catalog=true]
+https://github.com/spring-cloud/spring-functions-catalog/tree/main/function/spring-splitter-function#configuration-options[See Spring Functions Catalog for configuration options].
 //end::configuration-properties[]
 
 //end::ref-doc[]