Merge pull request #148 from tnull/patch-6

Update `random_number_generation.md`

Author: Conor Okus

docs/overview/random_number_generation.md

@@ -1,5 +1,5 @@
 # Random Number Generation 
 
-LDK aims to make no system calls, it is restricted from generating its own randomness.
+LDK aims to make no system calls, it is therefore restricted from generating its own randomness.
 
-The sample node implementation uses Rust's rand crate [here](https://github.com/lightningdevkit/ldk-sample/blob/2cd778e7acc959689e3b8462c529ffb3509aa1ec/src/main.rs#L464-L465) and elsewhere.
+The sample node implementation uses Rust's `rand` crate [here](https://github.com/lightningdevkit/ldk-sample/blob/2cd778e7acc959689e3b8462c529ffb3509aa1ec/src/main.rs#L464-L465) and elsewhere.