Improved feature documentation

Author: StefanMathis

README.md

@@ -10,7 +10,7 @@ A library for comparing the ordering of variables and producing useful error mes
 This library is based on the struct [`ComparisonError`], which can be used to compare the partial ordering
 of two to three variables of any type `T` which implements the [`PartialOrd`] trait. If the comparison evaluates
 to false, [`ComparisonError`] can be formatted into a nice error message. To simplify the usage, the procedural
-macro [`compare_variables`] is provided via the feature flag **proc_macro** (enabled by default).
+macro [`compare_variables`] is provided via the feature flag `proc_macro` (enabled by default).
 
 The full API documentation is available at [https://docs.rs/compare_variables/0.2.0/compare_variables/](https://docs.rs/compare_variables/0.2.0/compare_variables/).
 
@@ -53,7 +53,7 @@ assert_eq!(err.to_string(), "`arg (value: 1) > 2 > z (value: 3)` is false");
 
 # Usage without the procedural macro
 
-In order to minimize dependencies, it is possible to use this crate without the **proc_macro** feature flag.
+In order to minimize dependencies, it is possible to use this crate without the  `proc_macro ` feature flag.
 Please see the docstring of [`ComparisonError`] for details.
 
 ```rust

src/lib.rs

@@ -60,7 +60,7 @@ assert_eq!(err.to_string(), "`x (value: 1) > y (value: 2)` is false");
 ## Construction via macro
 
 It is recommended to use the procedural macro [`compare_variables`] to construct this struct
-(available via the feature flag **proc_macro** which is enabled by default). With the macro,
+(available via the feature flag  `proc_macro ` which is enabled by default). With the macro,
 the previous example is simplified to:
 ```
 use compare_variables::compare_variables;