Fix path in zip file (#5371)

Remove the "build/distribution" part of the folder structure in the zip file.

Author: tobiasdiez

.github/workflows/deployment.yml

@@ -18,7 +18,7 @@ jobs:
            displayName: windows
            jpackageDownload: https://download.java.net/java/early_access/jpackage/1/openjdk-14-jpackage+1-49_windows-x64_bin.zip
            jdk14Path: /jdk-14
-           archivePortable: 7z a -r build/distribution/JabRef-portable_windows.zip build/distribution/JabRef/ && rm -R build/distribution/JabRef
+           archivePortable: 7z a -r build/distribution/JabRef-portable_windows.zip ./build/distribution/JabRef && rm -R build/distribution/JabRef
          - os: macOS-latest
            displayName: macOS
            jpackageDownload: https://download.java.net/java/early_access/jpackage/1/openjdk-14-jpackage+1-49_osx-x64_bin.tar.gz