"up-to-date" should only use hyphens when used as compound modifier of a noun

docs/clang.md

 # Clang
 
 [Clang](http://clang.llvm.org/) is a compiler with many desirable features
 (outlined on their website).
 
 Chrome can be built with Clang. It is now the default compiler on Mac and Linux
 for building Chrome, and it is currently useful for its warning and error
 messages on Android and Windows.
 
 See
@@ skipping 75 matching lines @@
 ``` shell
 python tools\clang\scripts\update.py
 set GYP_DEFINES=clang=1
 python build\gyp_chromium
 
 # or, if you use gn, run `gn args` and add `is_clang = true` to your args.gn
 ninja -C out\Debug chrome
 ```
 
 The `update.py` script only needs to be run once per checkout. Clang will be
-kept up-to-date by `gclient runhooks`.
+kept up to date by `gclient runhooks`.
 
 Current brokenness:
 
 *   Debug info is very limited.
 *   To get colored diagnostics, you need to be running
     [ansicon](https://github.com/adoxa/ansicon/releases).
 
 ## Using a custom clang binary
 
 If you want to try building Chromium with your own clang binary that you've
@@ skipping 27 matching lines @@
 **Experimental!**
 
 LLD is a relatively new linker from LLVM. The current focus is on Windows and
 Linux support, where it can link Chrome approximately twice as fast as gold and
 MSVC's link.exe as of this writing. LLD does not yet support generating PDB
 files, which makes it hard to debug Chrome while using LLD.
 
 If you use gyp, you can enable it with `GYP_DEFINES=lld=1`. If you use gn, set
 `use_lld = true` in args.gn. Currently this configuration is only supported on
 Windows.