Apply suggestions from code review

Co-authored-by: Louise Berglund <[email protected]>

modules/ROOT/pages/notifications/all-notifications.adoc

@@ -795,7 +795,7 @@ m|HINT
 |GQLSTATUS code
 m|01N30
 |StatusDescription
-a|warn: join hint unfulfillable. Unable to create a plan with `JOIN ON $label`. Try to change the join key(s) or restructure your query.
+a|warn: join hint unfulfillable. Unable to create a plan with `JOIN ON $var_list`. Try to change the join key(s) or restructure your query.
 |Severity
 m|WARNING
 |Classification
@@ -906,7 +906,7 @@ m|HINT
 ======
 =====
 
-==== Example of when an index hint was given, but it was not possible to use the index
+==== Example of inability to use the label index despite the given index hint
 
 [.tabbed-example]
 =====
@@ -949,15 +949,15 @@ Returned GQLSTATUS code::
 
 Returned Status Description::
 warn: hinted index not found.
-Unable to create a plan with `INDEX a:Label(id)` because the index does not exist.
+Unable to create a plan with `INDEX :Label(id)` because the index does not exist.
 
 Suggestions for improvement::
 The hinted index does not exist, make sure the label and property are spelled correctly.
 If the spelling is correct, either create the index or remove the hint from the query.
 ======
 =====
 
-==== Example of when a relationship index hint was given, but it was not possible to use the index
+==== Example of inability to use the relationship index despite the given index hint
 
 [.tabbed-example]
 =====
@@ -1000,7 +1000,7 @@ Returned GQLSTATUS code::
 
 Returned Status Description::
 warn: hinted index not found.
-Unable to create a plan with `INDEX r:Rel(id)` because the index does not exist.
+Unable to create a plan with `INDEX :Rel(id)` because the index does not exist.
 
 Suggestions for improvement::
 The hinted index does not exist, make sure the relationship type and property are spelled correctly.