rfc, try-expr: fix date

Centril · web-flow · commit 6888455a1da8 · 2018-04-04T20:29:55.000+02:00
diff --git a/text/0000-try-expr.md b/text/0000-try-expr.md
@@ -1,5 +1,5 @@
 - Feature Name: `try_expr`
-- Start Date: 2018-04-03
+- Start Date: 2018-04-04
 - RFC PR: (leave this empty)
 - Rust Issue: (leave this empty)
 
@@ -831,4 +831,4 @@ but rather the body of expression we wish to `try`.
 # Unresolved questions
 [unresolved]: #unresolved-questions
 
-None as of yet.
+None as of yet.
