docs: update dependencies (#393)

Author: JuArce

Makefile

@@ -666,6 +666,7 @@ build_all_ffi_linux: ## Build all FFIs for Linux
 	@$(MAKE) build_risc_zero_linux
 #	@$(MAKE) build_merkle_tree_linux
 	@$(MAKE) build_halo2_ipa_linux
+	@$(MAKE) build_halo2_kzg_linux
 	@echo "All Linux FFIs built successfully."
 
 

README.md

@@ -134,6 +134,11 @@ Ensure you have the following installed:
 - [Rust](https://www.rust-lang.org/tools/install)
 - [Foundry](https://book.getfoundry.sh/getting-started/installation)
 
+Also, you have to install the following dependencies for Linux:
+
+- pkg-config
+- libssl-dev
+
 To install foundry, run:
 
 ```bash