Test link checker with respect to hard-coded guide URLs

docs/en/ingest-management/troubleshooting/troubleshooting.asciidoc

@@ -4,6 +4,32 @@
 We have collected the most common known problems and listed them here. If your problem
 is not described here, please review the open issues in the following GitHub repositories:
 
+
+TEST1: This investigation guide uses https://www.elastic.co/guide/en/security/current/osquery-placeholder-fields.html[1 placeholder fields] to dynamically pass alert data into Osquery queries.
+
+TEST2: This investigation guide uses link:https://www.elastic.co/guide/en/security/current/osquery-placeholder-fields.html[2 placeholder fields] to dynamically pass alert data into Osquery queries.
+
+TEST3:  This investigation guide uses {security-guide}/osquery-placeholder-fields.html[3 placeholder fields] to dynamically pass alert data into Osquery queries.
+
+
+[source, markdown]
+----------------------------------
+
+I am a humble markdown codeblock.
+Remember to eat your leafy greens.
+
+TEST4: This investigation guide uses https://www.elastic.co/guide/en/security/current/osquery-placeholder-fields.html[4 placeholder fields] to dynamically pass alert data into Osquery queries.
+
+TEST5: This investigation guide uses link:https://www.elastic.co/guide/en/security/current/osquery-placeholder-fields.html[5 placeholder fields] to dynamically pass alert data into Osquery queries.
+
+TEST6:  This investigation guide uses {security-guide}/osquery-placeholder-fields.html[6 placeholder fields] to dynamically pass alert data into Osquery queries.
+
+TEST7: This investigation guide uses [7 placeholder fields](https://www.elastic.co/guide/en/security/current/osquery-placeholder-fields.html) to dynamically pass alert data into Osquery queries.
+
+----------------------------------
+
+
+
 [options,header]
 |===
 | Repository | To review or report issues about