Replace instances of datadeps --> data_deps.

tools/gn/docs/language.md

Index: tools/gn/docs/language.md
diff --git a/tools/gn/docs/language.md b/tools/gn/docs/language.md
index 080fe49a4d9f0fe99bc68983a128cff60bf5ca46..35ef4ae078d1af0d844f3a86521a05f8ea216ef7 100644
--- a/tools/gn/docs/language.md
+++ b/tools/gn/docs/language.md
@@ -517,7 +517,7 @@ if (target_cpu == "x64") {
 ```
 
 If a 64-bit target wants to depend on a 32-bit binary, it would specify
-a dependency using `datadeps` (data deps are like deps that are only
+a dependency using `data_deps` (data deps are like deps that are only
 needed at runtime and aren't linked, since you can't link a 32-bit and a
 64-bit library).
 
@@ -526,7 +526,7 @@ executable("my_program") {
   ...
   if (target_cpu == "x64") {
     # The 64-bit build needs this 32-bit helper.
-    datadeps = [ ":helper(//toolchains:32)" ]
+    data_deps = [ ":helper(//toolchains:32)" ]
   }
 }