add link to export package

README.md

@@ -27,8 +27,8 @@ in real life:
 | CAD files of parts | [/CAD/Parts/](/CAD/Parts/) |
 | CAD files of assemblies| [/CAD/Assemblies/](/CAD/Assemblies/) |
 | technical drawings (source) | [/CAD/Drawings/](/CAD/Drawings/) |
-| export files | in the [release]() |
-| assembly instructions | see PDF drawings in the [release]() |
+| export files | in the [release](https://gitlab.opensourceecology.de/verein/projekte/dokumentation-bekanntmachung-von-open-hardware-regenerativer-energie-projekte/zig-zag-solar-water-heater/-/tags/v1.0.0) |
+| assembly instructions | see PDF drawings in the [release](https://gitlab.opensourceecology.de/verein/projekte/dokumentation-bekanntmachung-von-open-hardware-regenerativer-energie-projekte/zig-zag-solar-water-heater/-/tags/v1.0.0) |
 
 **What are "export files"?**\
 Those are STP models, PDF drawings etc. exported from the source files (native CAD files etc.) that can be found in this repo.