fix: brackets syntax for secrets accessing

app.py

@@ -18,7 +18,7 @@ st.set_page_config(
 # Function to inject Google Analytics using st.components.v1.html
 def inject_ga():
     try:
-        GA_MEASUREMENT_ID = os.getenv["measurement_id"]
+        GA_MEASUREMENT_ID = os.getenv("measurement_id")
 
         # Define the Google Analytics script
         GA_SCRIPT = f"""
@@ -42,8 +42,7 @@ def inject_ga():
 inject_ga()
 
 # Initialize the Groq client
-GROQ_API_KEY = os.getenv["GROQ_API_KEY"]
-os.environ["GROQ_API_KEY"] = GROQ_API_KEY
+GROQ_API_KEY = os.getenv("GROQ_API_KEY")
 client = Groq()
 
 if "session_uuid" not in st.session_state: