Fix typo in help string

Change-Id: I69232da144f0ab64c4140f68cbf150613855b38c
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/14220
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>

docs/reference.md

diff --git a/docs/reference.md b/docs/reference.md
index ef9a324..3ebed7a 100644
--- a/docs/reference.md
+++ b/docs/reference.md
@@ -34,7 +34,7 @@
     *   [shared_library: Declare a shared library target.](#func_shared_library)
     *   [source_set: Declare a source set target.](#func_source_set)
     *   [static_library: Declare a static library target.](#func_static_library)
-    *   [target: Declare an target with the given programmatic type.](#func_target)
+    *   [target: Declare a target with the given programmatic type.](#func_target)
 *   [Buildfile functions](#functions)
     *   [assert: Assert an expression is true at generation time.](#func_assert)
     *   [config: Defines a configuration object.](#func_config)
@@ -2229,7 +2229,7 @@
   target containing both C and C++ sources is acceptable, but a
   target containing C and Rust sources is not).
 ```
-### <a name="func_target"></a>**target**: Declare an target with the given programmatic type.
+### <a name="func_target"></a>**target**: Declare a target with the given programmatic type.
 
 ```
   target(target_type_string, target_name_string) { ... }

src/gn/functions_target.cc

diff --git a/src/gn/functions_target.cc b/src/gn/functions_target.cc
index 8c8613c..4ca2c10 100644
--- a/src/gn/functions_target.cc
+++ b/src/gn/functions_target.cc
@@ -859,9 +859,9 @@
 
 const char kTarget[] = "target";
 const char kTarget_HelpShort[] =
-    "target: Declare an target with the given programmatic type.";
+    "target: Declare a target with the given programmatic type.";
 const char kTarget_Help[] =
-    R"(target: Declare an target with the given programmatic type.
+    R"(target: Declare a target with the given programmatic type.
 
   target(target_type_string, target_name_string) { ... }