fix broken xrefs (neo4j#1380)

Author: JPryce-Aklundh

modules/ROOT/pages/clauses/create.adoc

@@ -95,7 +95,7 @@ If you intend to add a label, use the xref:clauses/set.adoc#set-set-a-label-on-a
 
 [[reusing-variables-properties]]
 == Reusing variables in properties
-The value that can be assigned to a node's or a relationship's property can be defined by an xref::syntax/expressions.adoc[expression].
+The value that can be assigned to a node's or a relationship's property can be defined by an xref::expressions/index.adoc[expression].
 
 ////
 .Parameters

modules/ROOT/pages/clauses/match.adoc

@@ -493,7 +493,7 @@ RETURN actors.name AS actor, movieCount, collect(movies.title) AS movies
 <1> The `Person` and `Movie` nodes matched in this step are stored in variables, which are then passed on to the second row of the query.
 <2> The `movies` variable is implicitly imported by its occurrence in the `count()` function.
 The `WITH` clause explicitly imports the `actors` variable.
-<3> An xref:clauses/order-by.adoc[`ORDER BY`] clause orders the results by `movieCount` in descending order, ensuring that the `Person` with the highest number of movies appears at the top, and xref:clauses/limit.adoc[`LIMIT] 1` ensures that all other `Person` nodes are discarded.
+<3> An xref:clauses/order-by.adoc[`ORDER BY`] clause orders the results by `movieCount` in descending order, ensuring that the `Person` with the highest number of movies appears at the top, and xref:clauses/limit.adoc[`LIMIT`] `1` ensures that all other `Person` nodes are discarded.
 <4> The second `MATCH` clause finds all `Movie` nodes associated with the `Person` nodes currently bound to the `actors` variable.
 
 [NOTE]

modules/ROOT/pages/clauses/remove.adoc

@@ -66,7 +66,7 @@ Properties set: 1
 == Remove all properties
 
 `REMOVE` cannot be used to remove all existing properties from a node or relationship.
-Instead, using xref::clauses/set.adoc#set-remove-properties-using-empty-map[`SET` with `=` and an empty map as the right operand] will clear all properties from the node or relationship.
+Instead, using xref::clauses/set.adoc#set-remove-properties-using-empty-map[`SET`] with `=` and an empty map as the right operand will clear all properties from the node or relationship.
 
 [role=label--new-5.24]
 [[dynamic-remove-property]]
@@ -154,7 +154,7 @@ REMOVE n:$(label)
 RETURN n.name, labels(n)
 ----
 
-<1> xref:clauses/unwind.adoc[`UNWIND`] is used here to transform the list of labels from the xref:functions/list.adoc#functions-labels[`labels()]` function into separate rows, allowing subsequent operations to be performed on each label individually.
+<1> xref:clauses/unwind.adoc[`UNWIND`] is used here to transform the list of labels from the xref:functions/list.adoc#functions-labels[`labels()`] function into separate rows, allowing subsequent operations to be performed on each label individually.
 
 .Result
 [role="queryresult",options="header,footer",cols="2*<m"]

modules/ROOT/pages/expressions/conditional-expressions.adoc

@@ -110,7 +110,7 @@ implied equals (`=`) comparator.
 The supported comparators are:
 
 * xref:expressions/predicates/comparison-operators.adoc[Regular Comparison Operators]: `+=+`, `+<>+`, `+<+`, `+>+`, `+<=+`, `+>=+`
-* xref:expressions/predicates/comparison-operators.adoc[`IS [NOT] NULL`]
+* xref:expressions/predicates/comparison-operators.adoc[`IS [NOT\] NULL`]
 * xref:expressions/predicates/type-predicate-expressions.adoc[Type predicate expressions]: `IS [NOT] TYPED <TYPE>` (Note that the form `IS [NOT] :: <TYPE>` is not accepted)
 * xref:expressions/predicates/string-operators.adoc[Normalization Predicate Expression]: `IS [NOT] NORMALIZED`
 * xref:expressions/predicates/string-operators.adoc[String Comparison Operators]: `STARTS WITH`, `ENDS WITH`, `=~` (regex matching)