And another one.

1a17276b · Robbert Krebbers · 7d30ec04 · 1a17276b
Commit 1a17276b authored Jul 05, 2016 by Robbert Krebbers
--- a/ProofMode.md
+++ b/ProofMode.md
@@ -140,7 +140,7 @@ which results in:
        x : nat
        H : x = 0
        ______________________________________(1/1)
-				"HQ" : Q
+        "HQ" : Q
        "HR" : R
        --------------------------------------□
        R ★ Q ∧ x = 1