style-guide: Remove trailing space

src/doc/style-guide/src/expressions.md

@@ -294,7 +294,7 @@ Use parentheses liberally, do not necessarily elide them due to precedence.
 Tools should not automatically insert or remove parentheses. Do not use spaces
 to indicate precedence.
 
-If line-breaking, put the operator on a new line and block indent. Put each 
+If line-breaking, put the operator on a new line and block indent. Put each
 sub-expression on its own line. E.g.,
 
 ```rust
@@ -595,7 +595,7 @@ let x = match foo.bar.baz() {
 };
 ```
 
-Use a trailing comma for a match arm if and only if not using a block. 
+Use a trailing comma for a match arm if and only if not using a block.
 
 Never start a match arm pattern with `|`, e.g.,
 

src/doc/style-guide/src/items.md

@@ -113,7 +113,7 @@ pulled down to its own line and indented again.
 ```rust
 struct Foo {
     a: A,
-    long_name: 
+    long_name:
         LongType,
 }
 ```
@@ -129,7 +129,7 @@ The same guidelines are used for untagged union declarations.
 union Foo {
     a: A,
     b: B,
-    long_name: 
+    long_name:
         LongType,
 }
 ```

src/doc/style-guide/src/statements.md

@@ -79,14 +79,14 @@ let foo:
     ALongType =
 {
     an_expression();
-    ...    
+    ...
 };
 
 let Foo {
     f: abcd,
     g: qwer,
 }: Foo<Bar> = Foo {
-    f: blimblimblim, 
+    f: blimblimblim,
     g: blamblamblam,
 };