shuffle 0-width spaces around so they are distributed more evenly

FDor editors that display 0-width space with more than 0 width, this makes the indentation of assertions more consistent

proofmode/notation.v

@@ -7,9 +7,9 @@ Arguments Enil {_}.
 Arguments Esnoc {_} _%proof_scope _%string _%uPred_scope.
 
 Notation "​" := Enil (format "​") : proof_scope.
-Notation "​ Γ H : P" := (Esnoc Γ H P)
+Notation "Γ ​ H : P" := (Esnoc Γ H P)
   (at level 1, P at level 200,
-   left associativity, format "​ Γ H  :  P '//'") : proof_scope.
+   left associativity, format "Γ ​ H  :  P '//'") : proof_scope.
 Notation "Γ '--------------------------------------' □ Δ '--------------------------------------' ★ Q" :=
   (of_envs (Envs Γ Δ) ⊢ Q%I)
   (at level 1, Q at level 200, left associativity,