Stop generating the [TOC] in the GN reference docs.

tools/gn/docs/reference.md

Index: tools/gn/docs/reference.md
diff --git a/tools/gn/docs/reference.md b/tools/gn/docs/reference.md
index 39550a2ab8fb91e643dca97bcda0926cdb6d3f0e..a405a34f70889ed483df94e8c59422bcf531132d 100644
--- a/tools/gn/docs/reference.md
+++ b/tools/gn/docs/reference.md
@@ -1,7 +1,5 @@
 # GN Reference
 
-[TOC]
-
 *This page is automatically generated from* `gn help --markdown all`.
 
 ## **--args**: Specifies build arguments overrides.
@@ -565,7 +563,7 @@
 
 
 ```
-## **gn refs <out_dir> (<label_pattern>|<label>|<file>)* [--all]**
+## **gn refs <out_dir> (<label_pattern>|<label>|<file>|@<response_file>)* [--all]**
 ```
         [--all-toolchains] [--as=...] [--testonly=...] [--type=...]
 
@@ -587,6 +585,11 @@
      that does not contain wildcards and does not match a target or a
      config will be treated as a file.
 
+   - Response file: If the input starts with an "@", it will be
+     interpreted as a path to a file containing a list of labels or
+     file names, one per line. This allows us to handle long lists
+     of inputs without worrying about command line limits.
+
 ```
 
 ### **Options**