[doc] fix typos in doc. (#5217)

docs/source/Tutorial.md

@@ -767,7 +767,7 @@ our `orc` Monster, lets create some `Weapon`s: a `Sword` and an `Axe`.
 
 
 
-  // The genearted ObjectBuilder classes offer an easier to use alternative
+  // The generated ObjectBuilder classes offer an easier to use alternative
   // at the cost of requiring some additional reference allocations. If memory
   // usage is critical, or if you'll be working with especially large messages
   // or tables, you should prefer using the generated Builder classes.
@@ -1238,7 +1238,7 @@ for the `path` field above:
   final vec3Builder = new myGame.Vec3Builder(builder);
   vec3Builder.finish(4.0, 5.0, 6.0);
   vec3Builder.finish(1.0, 2.0, 3.0);
-  final int path = builder.endStructVector(2); // the lenght of the vector
+  final int path = builder.endStructVector(2); // the length of the vector
 
   // Otherwise, using the ObjectBuilder classes:
   // The dart implementation provides a simple interface for writing vectors
@@ -1520,7 +1520,7 @@ can serialize the monster itself:
   // Create the monster using the `Monster::create` helper function. This
   // function accepts a `MonsterArgs` struct, which supplies all of the data
   // needed to build a `Monster`. To supply empty/default fields, just use the
-  // Rust built-in `Default::default()` function, as demononstrated below.
+  // Rust built-in `Default::default()` function, as demonstrated below.
   let orc = Monster::create(&mut builder, &MonsterArgs{
       pos: Some(&Vec3::new(1.0f32, 2.0f32, 3.0f32)),
       mana: 150,
@@ -1663,7 +1663,7 @@ Here is a repetition these lines, to help highlight them more clearly:
 </div>
 <div class="language-c">
 ~~~{.c}
-  // Add union type and data simultanously.
+  // Add union type and data simultaneously.
   ns(Monster_equipped_Weapon_add(B, axe));
 ~~~
 </div>
@@ -1906,7 +1906,7 @@ like so:
 
 
 Now you can write the bytes to a file, send them over the network..
-**Make sure your file mode (or tranfer protocol) is set to BINARY, not text.**
+**Make sure your file mode (or transfer protocol) is set to BINARY, not text.**
 If you transfer a FlatBuffer in text mode, the buffer will be corrupted,
 which will lead to hard to find problems when you read the buffer.
 
@@ -2207,7 +2207,7 @@ accessors for all non-`deprecated` fields. For example:
 <div class="language-csharp">
 ~~~{.cs}
   // For C#, unlike most other languages support by FlatBuffers, most values (except for
-  // vectors and unions) are available as propreties instead of asccessor methods.
+  // vectors and unions) are available as properties instead of accessor methods.
   var hp = monster.Hp
   var mana = monster.Mana
   var name = monster.Name
@@ -2258,7 +2258,7 @@ accessors for all non-`deprecated` fields. For example:
 <div class="language-dart">
 ~~~{.dart}
   // For Dart, unlike other languages support by FlatBuffers, most values
-  // are available as propreties instead of asccessor methods.
+  // are available as properties instead of accessor methods.
   var hp = monster.hp;
   var mana = monster.mana;
   var name = monster.name;