Update src/systems/optimization/constraints_system.jl

Co-authored-by: Christopher Rackauckas <[email protected]>

Author: AayushSabharwal

src/systems/optimization/constraints_system.jl

@@ -74,7 +74,7 @@ struct ConstraintsSystem <: AbstractTimeIndependentSystem
     """
     substitutions::Any
     """
-    If false, then `sys.x` no longer performs namespacing.
+    If false, then `sys.x` no longer performs namespacing, i.e. `sys.x => x`
     """
     namespacing::Bool
     """