Override existing environment variables when loading .env in examples (#48)

Author: badmonster0

examples/code_embedding/code_embedding.py

@@ -61,5 +61,5 @@ def _run():
             break
 
 if __name__ == "__main__":
-    load_dotenv()
+    load_dotenv(override=True)
     _run()

examples/pdf_embedding/pdf_embedding.py

@@ -90,5 +90,5 @@ def _run():
             break
 
 if __name__ == "__main__":
-    load_dotenv()
+    load_dotenv(override=True)
     _run()

examples/text_embedding/text_embedding.py

@@ -63,5 +63,5 @@ def _run():
             break
 
 if __name__ == "__main__":
-    load_dotenv()
+    load_dotenv(override=True)
     _run()