Add unbounded-collector warning to the resource collectors page

docs/_openvox_8x/lang_collectors.markdown

@@ -53,6 +53,10 @@ resembles the normal syntax for [Puppet expressions][expressions], but is not th
 
 A collector with an empty search expression will match **every** resource of the specified resource type.
 
+{% include alert.html type="warning" content="Do not use unbounded resource collectors without search expressions to limit which resources match.
+They have a side effect of _realizing_ any matching virtual resources whether declared in your own code or in third party modules.
+Using unbounded collectors may result in many unexpected resources being managed and may have unforeseeable consequences like undesired configuration changes." %}
+
 Parentheses can be used to improve readability and to modify the priority/grouping of `and`/`or`. You can
 create arbitrarily complex expressions using the following four operators:
 

docs/_openvox_8x/lang_relationships.markdown

@@ -163,7 +163,7 @@ This example applies all internal yum repository resources before applying any i
 
 {% include alert.html type="warning" content="Do not use unbounded resource collectors without search expressions to limit which resources match.
 They have a side effect of _realizing_ any matching virtual resources whether declared in your own code or in third party modules.
-Using unbounded collectors may result in many unexpected resources being managed and may have catastrophic consequences." %}
+Using unbounded collectors may result in many unexpected resources being managed and may have unforeseeable consequences like undesired configuration changes." %}
 
 ### Capturing resource references for generated resources