🚚 remove < from filename to fix Windows build

doc/mkdocs/docs/api/basic_json/index.md

@@ -187,12 +187,12 @@ Access to the JSON value
 
 ### Lexicographical comparison operators
 
-- [**operator==**](operator==.md) - comparison: equal
-- [**operator!=**](operator!=.md) - comparison: not equal
-- [**operator<**](operator<.md) - comparison: less than
-- [**operator<=**](operator<=.md) - comparison: less than or equal
-- [**operator>**](operator>.md) - comparison: greater than
-- [**operator>=**](operator>=.md) - comparison: greater than or equal
+- [**operator==**](operator_eq.md) - comparison: equal
+- [**operator!=**](operator_ne.md) - comparison: not equal
+- [**operator<**](operator_lt.md) - comparison: less than
+- [**operator<=**](operator_le.md) - comparison: less than or equal
+- [**operator>**](operator_gt.md) - comparison: greater than
+- [**operator>=**](operator_ge.md) - comparison: greater than or equal
 
 ### Serialization / Dumping