Update README

README.org

@@ -4,7 +4,9 @@ The Flypitch project aims to produce a formal proof of the [[https://en.wikipedi
 ** Documentation
 A conventional human-readable account of the proof written in type-theoretic foundations, upon which some parts of the formalization will be based, is [[https://www.github.com/flypitch/flypitch-notes/][located here]].
 ** Compilation
-To compile the Flypitch project, you will need [[https://leanprover.github.io/][Lean 3.4.2]]. The ~leanpkg.toml~ file points to a certain commit of ~mathlib~, which will be cloned into the project directory. After cloning the repository to ~flypitch~, navigate to ~flypitch~ and run
+To compile the Flypitch project, you will need [[https://leanprover.github.io/][Lean 3.4.2]]. Installation instructions for Lean can be found [[https://github.com/leanprover-community/mathlib/blob/master/README.md][here]].
+
+The ~leanpkg.toml~ file points to a certain commit of ~mathlib~, which will be cloned into the project directory. After cloning the repository to ~flypitch~, navigate to ~flypitch~ and run
 #+BEGIN_SRC
 leanpkg configure
 leanpkg build
@@ -19,8 +21,6 @@ update-mathlib
 leanpkg build
 #+END_SRC
 
-Installation instructions for Lean (using ~elan~) can be found [[https://github.com/leanprover-community/mathlib/blob/master/docs/elan.md][here]].
-
 ** Viewing and navigating the project
 To view the project, we recommend the use of a Lean-aware editor like [[https://github.com/leanprover/lean-mode][Emacs]] or [[https://github.com/leanprover/vscode-lean][VSCode]]. Among other things, like type information, such editors can display the /proof state/ inside a tactic block, making it easier to understand how theorems are being proved.