Uniform spacing across all filter examples

docsite/rst/playbooks_variables.rst

@@ -189,7 +189,7 @@ All these functions return a unique set from sets or lists.
 
 To get a unique set from a list::
 
-    {{ list1 |unique }}
+    {{ list1 | unique }}
 
 To get a union of two lists::
 
@@ -197,15 +197,15 @@ To get a union of two lists::
 
 To get the intersection of 2 lists (unique list of all items in both)::
 
-    {{ list1 |intersect(list2)}}
+    {{ list1 | intersect(list2) }}
 
 To get the difference of 2 lists (items in 1 that don't exist in 2)::
 
-    {{ list1 |difference(list2)}}
+    {{ list1 | difference(list2) }}
 
 To get the symmetric difference of 2 lists (items exclusive to each list)::
 
-    {{ list1 |symmetric_difference(list2)}}
+    {{ list1 | symmetric_difference(list2) }}
 
 .. _other_useful_filters: