Update Documentation with enrichment ES recommendations

Update Documentation with enrichment ES recommendations

Indexing of complex property list might cause issues, therefore enrichments:filled and enrichments:corrected should be excluded from indexing.

Since ES mapping is contributed by customers we can only improve our documentation by adding a recommendation for the dynamic templates

"no_enrichment_filled_template" : {
            "mapping" : {
              "index" : "no",
              "include_in_all" : false
            },
            "path_match" : "enrichment:filled.*"
          }
        }