fix the default value for --multiline-fields-format

Author: renetapopova

modules/ROOT/pages/tools/neo4j-admin/neo4j-admin-import.adoc

@@ -232,7 +232,7 @@ It can also be specified as a percentage of the available memory, for example `7
 
 |--multiline-fields-format=v1\|v2
 |label:new[Introduced in 5.26] Controls the parsing of input source that can span multiple lines, i.e. contain newline characters. When set to v1, the value for `--multiline-fields` can only be true or false. When set to v2, the value for `--multiline-fields` should be the list of files that contain multiline fields.
-|v1
+|null
 
 |--nodes=[<label>[:<label>]...=]<files>...
 |Node CSV header and data.
@@ -751,7 +751,7 @@ It can also be specified as a percentage of the available memory, for example `7
 
 |--multiline-fields-format=v1\|v2
 |label:new[Introduced in 5.26] Controls the parsing of input source that can span multiple lines, i.e. contain newline characters. When set to v1, the value for `--multiline-fields` can only be true or false. When set to v2, the value for `--multiline-fields` should be the list of files that contain multiline fields.
-|v1
+|null
 
 |--nodes=[<label>[:<label>]...=]<files>...
 |Node CSV header and data.