Fix some grammar issues.

Author: ehuss

src/items/generics.md

@@ -12,10 +12,10 @@
 > &nbsp;&nbsp; ( _LifetimeParam_ `,` )<sup>\*</sup> _LifetimeParam_<sup>?</sup>
 >
 > _LifetimeParam_ :\
-> &nbsp;&nbsp; [_OuterAttribute_]<sup>?</sup> [LIFETIME_OR_LABEL] `:` [_LifetimeBounds_]<sup>?</sup>
+> &nbsp;&nbsp; [_OuterAttribute_]<sup>?</sup> [LIFETIME_OR_LABEL]&nbsp;( `:` [_LifetimeBounds_] )<sup>?</sup>
 >
 > _TypeParams_:\
-> &nbsp;&nbsp; ( _TypeParam_ `,` )<sup>\*</sup> _TypeParam_ <sup>?</sup>
+> &nbsp;&nbsp; ( _TypeParam_ `,` )<sup>\*</sup> _TypeParam_<sup>?</sup>
 >
 > _TypeParam_ :\
 > &nbsp;&nbsp; [_OuterAttribute_]<sup>?</sup> [IDENTIFIER] ( `:` [_TypeParamBounds_] )<sup>?</sup> ( `=` [_Type_] )<sup>?</sup>

src/items/traits.md

@@ -4,6 +4,7 @@
 > _Trait_ :\
 > &nbsp;&nbsp; `unsafe`<sup>?</sup> `trait` [IDENTIFIER]&nbsp;
 >              [_Generics_]<sup>?</sup>
+>              ( `:` [_TypeParamBounds_]<sup>?</sup> )<sup>?</sup>
 >              [_WhereClause_]<sup>?</sup> `{`\
 > &nbsp;&nbsp;&nbsp;&nbsp; _TraitItem_<sup>\*</sup>\
 > &nbsp;&nbsp; `}`
@@ -40,10 +41,10 @@
 > &nbsp;&nbsp; ( [_Pattern_] `:` )<sup>?</sup> [_Type_]
 >
 > _TraitConst_ :\
-> &nbsp;&nbsp; `const` [IDENTIFIER] ( ( `:` [_Type_] ) ( `=` [_Expression_] )<sup>?</sup> )<sup>?</sup> `;`
+> &nbsp;&nbsp; `const` [IDENTIFIER] `:` [_Type_]&nbsp;( `=` [_Expression_] )<sup>?</sup> `;`
 >
 > _TraitType_ :\
-> &nbsp;&nbsp; `type` [IDENTIFIER] ( `:` [_TypeParamBounds_] )<sup>?</sup> `;`
+> &nbsp;&nbsp; `type` [IDENTIFIER] ( `:` [_TypeParamBounds_]<sup>?</sup> )<sup>?</sup> `;`
 
 A _trait_ describes an abstract interface that types can implement. This
 interface consists of [associated items], which come in three varieties:

src/items/use-declarations.md

@@ -2,7 +2,7 @@
 
 > **<sup>Syntax:</sup>**\
 > _UseDeclaration_ :\
-> &nbsp;&nbsp; [_Visibility_]<sup>?</sup> `use` _UseTree_ `;`
+> &nbsp;&nbsp; `use` _UseTree_ `;`
 >
 > _UseTree_ :\
 > &nbsp;&nbsp; &nbsp;&nbsp; ([_SimplePath_]<sup>?</sup> `::`)<sup>?</sup> `*`\
@@ -152,5 +152,4 @@ fn main() {}
 
 [IDENTIFIER]: identifiers.html
 [_SimplePath_]: paths.html#simple-paths
-[_Visibility_]: visibility-and-privacy.html
 [path qualifiers]: paths.html#path-qualifiers