fix: unnecessary space

en/src/basic-types/char-bool-unit.md

@@ -2,7 +2,7 @@
 
 ### Char
 1. 🌟
-```rust, editable
+```rust,editable
 
 // Make it work
 use std::mem::size_of_val;
@@ -18,7 +18,7 @@ fn main() {
 ```
 
 2. 🌟
-```rust, editable
+```rust,editable
 
 // Make it work
 fn main() {
@@ -33,7 +33,7 @@ fn print_char(c : char) {
 
 ### Bool
 3. 🌟
-```rust, editable
+```rust,editable
 
 // Make println! work
 fn main() {
@@ -47,7 +47,7 @@ fn main() {
 ```
 
 4. 🌟
-```rust, editable
+```rust,editable
 
 // Make it work
 fn main() {

en/src/generics-traits/traits.md

@@ -335,7 +335,7 @@ The `impl Trait` syntax works for straightforward cases but is actually syntax s
 When working with generics, the type parameters often must use traits as bounds to stipulate what functionality a type implements. 
 
 7. 🌟🌟
-```rust, editable
+```rust,editable
 fn main() {
     assert_eq!(sum(1, 2), 3);
 }

en/src/ownership/ownership.md

@@ -62,7 +62,7 @@ fn print_str(s: String)  {
 ```
 
 5. 🌟🌟 
-```rust, editable
+```rust,editable
 // Don't use clone ,use copy instead
 fn main() {
     let x = (1, 2, (), "hello".to_string());