Apply two more AA-turner edits

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

Author: hoodmane

peps/pep-0776.rst

@@ -76,9 +76,11 @@ Background on Emscripten
 
 `Emscripten
 <https://emscripten.org/docs/introducing_emscripten/about_emscripten.html>`__
-consists of a C and C++ compiler and linker based on LLVM, together with a
+consists of a C and C++ compiler and linker based on LLVM__, together with a
 runtime based on a mildly patched musl libc.
 
+__ https://llvm.org/
+
 Emscripten is a POSIX-based platform. It uses the `WebAssembly binary format`_,
 and the `WebAssembly dynamic linking section`_.
 
@@ -240,7 +242,9 @@ Emscripten file system. There are several possible approaches to this:
 
 * For Node.js, use the NODEFS to mount a native directory with the files into the
   Emscripten file system. This is the most efficient option but is Node only. It
-  is closely analogous to what wasi does.
+  is closely analogous to what WASI_ does.
+
+  .. _WASI: https://wasi.dev/
 
 * Put the standard library into a zip archive and use ``ZipImporter``. Using an
   uncompressed zip file allows the web server and client to apply better