Update welcome message for NeqSim tool

Author: EvenSol

welcome.py

@@ -26,7 +26,7 @@ def make_request(question_input: str):
 
 st.image('images/neqsimlogocircleflat.png', width=150)
 
-st.write("# Welcome to the NeqSim Simulation Platform! 👋")
+st.write("# Welcome to the NeqSim Process Simulation Tool! 👋")
 
 """
 ### About NeqSim