doc: update readme

README.md

@@ -13,22 +13,23 @@ According to our benchmarks, it can be faster than ICU.
 
 ## Usage
 
-```C++
-    std::string_view input = u8"meßagefactory.ca";// non-empty UTF-8 string, must be percent decoded
-    std::string idna_ascii = ada::idna::to_ascii(input);
-    if(idna_ascii.empty()) {
-        // There was an error.
-    }
-    std::cout << idna_ascii << std::endl;
-    // outputs 'xn--meagefactory-m9a.ca' if the input is u8"meßagefactory.ca"
+```cpp
+std::string_view input = u8"meßagefactory.ca";// non-empty UTF-8 string, must be percent decoded
+std::string idna_ascii = ada::idna::to_ascii(input);
+if(idna_ascii.empty()) {
+    // There was an error.
+}
+std::cout << idna_ascii << std::endl;
+// outputs 'xn--meagefactory-m9a.ca' if the input is u8"meßagefactory.ca"
 ```
 
 ## Benchmarks
 
 You may build a benchmarking tool with the library as follows under macOS and Linux:
 
-```
+```bash
 cmake -D ADA_IDNA_BENCHMARKS=ON -B build
+cmake --build build
 ./build/benchmarks/to_ascii
 ```
 
@@ -48,6 +49,8 @@ Icu              2405 ns         2405 ns       299564 speed=29.5213M/s time/byte
 
 ### Git hooks
 
+Git hooks are recommended for following our `.clang-format` style.
+
 1. Install [pre-commit](https://pre-commit.com/)
 
     Using [pip](https://www.w3schools.com/python/python_pip.asp):