Add missing space after commas

rust-lang-cn · Aug 15, 2018 · fd315f0 · fd315f0
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diff --git a/src/editions/transitioning-your-code-to-a-new-edition.md b/src/editions/transitioning-your-code-to-a-new-edition.md
@@ -49,7 +49,7 @@ further testing and feedback on. Please try it out, by adding the following to
 your `lib.rs` or `main.rs`:
 
 ```rust
-#![feature(rust_2018_preview,uniform_paths)]
+#![feature(rust_2018_preview, uniform_paths)]
 ```
 
 The release of Rust 2018 will stabilize one of the two module path variants and

diff --git a/src/rust-2018/path-clarity.md b/src/rust-2018/path-clarity.md
@@ -20,7 +20,7 @@ new "uniform paths" variant introduced in edition preview 2. The release of
 Rust 2018 will stabilize one of these two variants and drop the other.
 
 To test Rust 2018 with the new "uniform paths" variant, put
-`#![feature(rust_2018_preview,uniform_paths)]` at the top of your `lib.rs` or
+`#![feature(rust_2018_preview, uniform_paths)]` at the top of your `lib.rs` or
 `main.rs`.
 
 Here's a brief summary: