docs(error): Improve message when hitting record quota

Author: pixelastic

lib/errors/record_too_big.txt

@@ -14,9 +14,12 @@ W:   {record_log_path}
 W:
 I:This issue can be caused by malformed HTML preventing the parser to correctly grab the content of the nodes. Double check that the page actually renders correctly with a regular `jekyll build`.
 I:
+I:You can also exclude the page generating this error from the indexing by editing the `files_to_exclude` key of your config.
+I:
 I:If you think this is an error and your current Algolia plan should allow you to push records bigger than {max_record_size}, you can change the `max_record_size` config option to increase the limit. Paid plans have a limit set to 20Kb, while free Community plans have it set to 10Kb.
 I:
 I:The following documentation might help you:
+I:   - https://community.algolia.com/jekyll-algolia/options.html#files-to-exclude
 I:   - https://community.algolia.com/jekyll-algolia/options.html#nodes-to-index
 I:   - https://community.algolia.com/jekyll-algolia/options.html#max-record-size
 I: