docs: update some links on the readme (#731)

Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

README.md

@@ -31,5 +31,5 @@ Please read the guidelines [here](https://github.com/ACINQ/lightning-kmp/blob/ma
 ## Resources
 
 * [1] [The Bitcoin Lightning Network: Scalable Off-Chain Instant Payments](https://lightning.network/lightning-network-paper.pdf) by Joseph Poon and Thaddeus Dryja
-* [2] [Reaching The Ground With Lightning](https://github.com/ElementsProject/lightning/raw/master/doc/deployable-lightning.pdf) by Rusty Russell
+* [2] [Reaching The Ground With Lightning](https://github.com/ElementsProject/lightning/blob/master/doc/miscellaneous/deployable-lightning.pdf) by Rusty Russell
 * [3] [When Phoenix on iOS?](https://medium.com/@ACINQ/when-ios-cdf798d5f8ef) - A blog post detailing why we created this library