/usr/share/GNUstep/Documentation/ is in gnustep-dl2 0.12.0-15.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/GNUstep/Documentation/GDL2Intro/
/usr/share/GNUstep/Documentation/GDL2Intro.pdf
/usr/share/GNUstep/Documentation/GDL2Intro/Classes.html
/usr/share/GNUstep/Documentation/GDL2Intro/Concepts.html
/usr/share/GNUstep/Documentation/GDL2Intro/Creating-with-DBModeler.html
/usr/share/GNUstep/Documentation/GDL2Intro/Database-connection.html
/usr/share/GNUstep/Documentation/GDL2Intro/Database-creation.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOAdaptor-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOAdaptorChannel-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOAdaptorContext-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOAttribute-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EODataSource-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOEditingContext-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOEntity-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOGenericRecord-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOInterface.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOModel-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EOModelGroup-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/EORelationship-class.html
/usr/share/GNUstep/Documentation/GDL2Intro/Example-model-file.html
/usr/share/GNUstep/Documentation/GDL2Intro/Index.html
/usr/share/GNUstep/Documentation/GDL2Intro/Key-Value-Coding.html
/usr/share/GNUstep/Documentation/GDL2Intro/Model-creation.html
/usr/share/GNUstep/Documentation/GDL2Intro/Project-creation.html
/usr/share/GNUstep/Documentation/GDL2Intro/Working-with-data.html
/usr/share/GNUstep/Documentation/GDL2Intro/index.html