[DOCS] Correct typo in ignore_malformed mapping parm docs (#50780)

Author: junmuz

docs/reference/mapping/params/ignore-malformed.asciidoc

@@ -95,7 +95,7 @@ Malformed fields are silently ignored at indexing time when `ignore_malformed`
 is turned on. Whenever possible it is recommended to keep the number of
 documents that have a malformed field contained, or queries on this field will
 become meaningless. Elasticsearch makes it easy to check how many documents
-have malformed fields by using `exist` or `term` queries on the special
+have malformed fields by using `exists`,`term` or `terms` queries on the special
 <<mapping-ignored-field,`_ignored`>> field.
 
 [[json-object-limits]]
@@ -111,4 +111,4 @@ of the wrong datatype. A JSON object is any data surrounded by curly brackets
 `"{}"` and includes data mapped to the nested, object, and range datatypes.
 
 If you submit a JSON object to an unsupported field, {es} will return an error
-and reject the entire document regardless of the `ignore_malformed` setting.
+and reject the entire document regardless of the `ignore_malformed` setting.