Remove dead Chromium link, fix #1263
diff --git a/doc/manual.asciidoc b/doc/manual.asciidoc
index d625fa9..3440740 100644
--- a/doc/manual.asciidoc
+++ b/doc/manual.asciidoc
@@ -157,8 +157,7 @@
https://gn.googlesource.com/gn/[gn]:: The meta-build system used to
generate build files for Google Chrome and related projects (v8,
node.js), as well as Google Fuschia. gn can generate Ninja files for
-all platforms supported by Chrome. See the
-https://chromium.googlesource.com/chromium/src/+/master/docs/ninja_build.md[Chromium Ninja documentation for more details].
+all platforms supported by Chrome.
https://cmake.org/[CMake]:: A widely used meta-build system that
can generate Ninja files on Linux as of CMake version 2.8.8. Newer versions
