Fix typo in REPL block (#493)

gdalle · web-flow · commit 7e3f494967a3 · 2021-09-29T13:42:00.000+03:00
diff --git a/docs/src/intro.md b/docs/src/intro.md
@@ -27,8 +27,6 @@ and feed an interval in. Since at each step of the process, the result is an int
 
 For example,
 ```
-using IntervalArithmetic
-
 julia> using IntervalArithmetic
 
 julia> f(x) = x^2 - 2
