Small fixes for Mojo docs

Change-Id: I5c9b07a3252a6cc3c303c8da3ccd2252be72d242
Reviewed-on: https://chromium-review.googlesource.com/1158717
Commit-Queue: Tom McKee <[email protected]>
Reviewed-by: Scott Violet <[email protected]>
Cr-Commit-Position: refs/heads/master@{#580221}
diff --git a/mojo/public/cpp/bindings/README.md b/mojo/public/cpp/bindings/README.md
index 89e5d95..5630adb1 100644
--- a/mojo/public/cpp/bindings/README.md
+++ b/mojo/public/cpp/bindings/README.md
@@ -669,7 +669,7 @@
 ```cpp
 union Value {
   int64 int_value;
-  float32 float_value;
+  float float_value;
   string string_value;
 };
 
@@ -678,12 +678,17 @@
 };
 ```
 
-This generates a the following C++ interface:
+This generates the following C++ interface:
 
 ```cpp
 class Value {
  public:
-  virtual ~Value() {}
+  ~Value() {}
+};
+
+class Dictionary {
+ public:
+  virtual ~Dictionary() {}
 
   virtual void AddValue(const std::string& key, ValuePtr value) = 0;
 };