Update README.md

2020-06-28 12:33:42 -04:00 · 2020-06-28 12:33:42 -04:00 · 703b3fb5b0
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@ -25,7 +25,7 @@ Try it [on Compiler Explorer](https://godbolt.org/z/T-MFoh).

 `f_to_string.hpp`, requiring C++20, provides an `f_to_string` utility for floating-point conversion:

-```
+```cpp
 puts(f_to_string<3.1415926>); // Defaults to 5-point precision: "3.14159"
 puts(f_to_string<{3.1415926, 7}>); // Specify precision: "3.1415926"
 ```