Fixes package.json path

Author: hbcarlos

jupyterlab_blockly/_version.py

@@ -4,9 +4,9 @@
 __all__ = ["__version__"]
 
 def _fetchVersion():
-    HERE = Path(__file__).parent.resolve()
+    HERE = Path(__package__).parent.resolve()
 
-    for settings in HERE.rglob("packages/blockly-extension/package.json"): 
+    for settings in HERE.rglob("blockly-extension/package.json"):
         try:
             with settings.open() as f:
                 version = json.load(f)["version"]