docs: improve README link

Author: feldroop

README.md

@@ -38,7 +38,7 @@ Please consult the [documentation] and the [examples](./examples) for more detai
 
 ## Performance and benchmarks
 
-This library only adds a few safety checks, which should not impact performance in a relevant way. A notable exception is the suffix array construction for `i32` and `i64` inputs. Please consult the [documentation] for details.
+This library only adds a few safety checks, which should not impact performance in a relevant way. A notable exception is the suffix array construction for `i32` and `i64` inputs. Please consult the [documentation](https://docs.rs/libsais/latest/libsais/suffix_array/index.html#large-alphabets) for details.
 
 Below are the results of a small benchmark of suffix array construction algorithms available on [crates.io](https://crates.io). The input was the human genome, truncated to 2 GB. Details about this benchmark can be found [here](https://github.com/feldroop/benchmark_crates_io_sacas).