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

tools/gn/variables.cc

Index: tools/gn/variables.cc
diff --git a/tools/gn/variables.cc b/tools/gn/variables.cc
index 8bafb68b02f33b0149465abdc3d55776b4c9a2c6..210eb5db1e8aa1bd438b952ec35327d64077ac1c 100644
--- a/tools/gn/variables.cc
+++ b/tools/gn/variables.cc
@@ -986,7 +986,7 @@ const char kInputs_Help[] =
     "\n"
     "  The problem happens if a file is ever removed because the inputs are\n"
     "  not listed on the command line to the script. Because the script\n"
-    "  hasn't changed and all inputs are up-to-date, the script will not\n"
+    "  hasn't changed and all inputs are up to date, the script will not\n"
     "  re-run and you will get a stale build. Instead, either list all\n"
     "  inputs on the command line to the script, or if there are many, create\n"
     "  a separate list file that the script reads. As long as this file is\n"
@@ -1001,7 +1001,7 @@ const char kInputs_Help[] =
     "  you do not typically need to list them in the inputs section.\n"
     "\n"
     "  Inputs for binary targets will be treated as order-only dependencies,\n"
-    "  meaning that they will be forced up-to-date before compiling or\n"
+    "  meaning that they will be forced up to date before compiling or\n"
     "  any files in the target, but changes in the inputs will not\n"
     "  necessarily force the target to compile. This is because it is\n"
     "  expected that the compiler will report the precise list of input\n"