doc: Update dependency required for "lld"

At least for homebrew, lld is no longer included in llvm releases

Author: kohlschuetter

src/site/markdown/crosscomp.md

@@ -8,9 +8,9 @@ JNI code for both macOS and Linux, on _either_ platform.
 In order to cross-compile, our development machine (the one where we do the compilation), needs
 to have clang and llvm.
 
-On Mac, the Xcode version of clang is not sufficient. You have to install llvm from Homebrew:
+On Mac, the Xcode version of clang is not sufficient. You have to install llvm and lld from Homebrew:
 
-    brew install llvm
+    brew install llvm lld
 
 ## Setting up the target SDKs
 
@@ -140,4 +140,4 @@ be relatively straightforward.
 
 ## See also
 
-[Developing with Xcode](xcode.html).
+[Developing with Xcode](xcode.html).

src/site/markdown/release.md.vm

@@ -12,7 +12,7 @@ x86_64-w64-mingw32-gcc, a GCC compiler binary to allow building for Windows.
 
 On Mac, run the following command.
 
-    brew install llvm mingw-w64
+    brew install llvm lld mingw-w64
 
 If you don't have Homebrew, obtain it from [here](https://brew.sh/) first.