Add docstring to general soundness theorem

coq/CertificateChecker.v

@@ -25,6 +25,10 @@ Definition CertificateChecker (e: expr Q) (absenv: analysisResult)
   | _ => false
   end.
 
+(**
+   General soundness theorem, exposing all invariants that are shown by
+   the separate validator functions
+**)
 Theorem Certificate_checking_is_sound_general (e:expr Q) (absenv:analysisResult)
         P Qmap subdivs defVars:
   forall (E1 E2:env) DeltaMap,