Fix style in modified chapters

Author: chorman0773

src/attributes/codegen.md

@@ -347,7 +347,7 @@ r[attributes.codegen.track_caller]
 
 r[attributes.codegen.track_caller.restriction]
 The `track_caller` attribute may be applied to any function with [`"Rust"` ABI][rust-abi]
-with the exception of the entry point `fn main`. 
+with the exception of the entry point `fn main`.
 
 r[attributes.codegen.track_caller.traits]
 When applied to functions and methods in trait declarations, the attribute applies to all implementations. If the trait provides a

src/attributes/derive.md

@@ -5,7 +5,7 @@ r[attributes.derive]
 
 r[attributes.derived.general]
 The *`derive` attribute* allows new [items] to be automatically generated for
-data structures. 
+data structures.
 
 r[attributes.derive.syntax]
 It uses the [_MetaListPaths_] syntax to specify a list of

src/attributes/diagnostics.md

@@ -10,7 +10,7 @@ messages during compilation.
 r[attributes.diagnostics.lints]
 
 A lint check names a potentially undesirable coding pattern, such as
-unreachable code or omitted documentation. 
+unreachable code or omitted documentation.
 
 r[attributes.diagnostics.lints.level]
 The lint attributes `allow`,

src/attributes/limits.md

@@ -11,7 +11,7 @@ r[attributes.limits.recursion_limits]
 r[attributes.limits.recursion_limits.application]
 The *`recursion_limit` attribute* may be applied at the [crate] level to set the
 maximum depth for potentially infinitely-recursive compile-time operations
-like macro expansion or auto-dereference. 
+like macro expansion or auto-dereference.
 
 r[attributes.limits.recursion_limits.syntax]
 It uses the [_MetaNameValueStr_]

src/attributes/testing.md

@@ -13,10 +13,10 @@ r[attributes.testing.test]
 
 
 r[attributes.testing.test.general]
-The *`test` attribute* marks a function to be executed as a test. 
+The *`test` attribute* marks a function to be executed as a test.
 
 r[attributes.testing.test.enabled]
-These functions are only compiled when in test mode. 
+These functions are only compiled when in test mode.
 
 r[attributes.testing.test.restriction]
 Test functions must be free, monomorphic functions that take no arguments, and the return type must implement the [`Termination`] trait, for example:
@@ -82,7 +82,7 @@ r[attributes.testing.should_panic]
 
 r[attributes.testing.should_panic.restriction]
 A function annotated with the `test` attribute that returns `()` can also be
-annotated with the `should_panic` attribute. 
+annotated with the `should_panic` attribute.
 
 r[attributes.testing.should_panic.behaviour]
 The *`should_panic` attribute*

src/attributes/type_system.md

@@ -11,7 +11,7 @@ r[attributes.type-system.non_exhaustive]
 
 r[attributes.type-system.non_exhaustive.general]
 The *`non_exhaustive` attribute* indicates that a type or variant may have
-more fields or variants added in the future. 
+more fields or variants added in the future.
 
 r[attributes.type-system.non_exhaustive.restriction]
 It can be applied to [`struct`s][struct], [`enum`s][enum], and `enum` variants.