Fixed spelling errors in headers

Author: robertosfield

include/vsg/app/CompileManager.h

@@ -83,7 +83,7 @@ namespace vsg
         /// compile all the command graphs in a task
         CompileResult compileTask(ref_ptr<RecordAndSubmitTask> task, const ResourceRequirements& resourceRequirements = {});
 
-        /// mechinism for releasing and reusing used resources
+        /// mechanism for releasing and reusing used resources
         ref_ptr<ResourceScavenger> resourceScavenger;
 
         std::atomic_uint successfulCompileCount{0};

include/vsg/core/type_name.h

@@ -49,7 +49,7 @@ namespace vsg
         template<> constexpr const char* vsg::type_name<T>() noexcept { return #T; } \
         template<> constexpr const char* vsg::type_name<const T>() noexcept { return "const "#T; }
 
-    /// convinience function for adding a space in front of the type_name string.
+    /// convenience function for adding a space in front of the type_name string.
     template<typename T>
     std::string space_type_name(const T&) { return std::string(" ") + type_name<T>(); }
 

include/vsg/nodes/InstanceNode.h

@@ -21,10 +21,10 @@ namespace vsg
 {
 
     /// InstanceNode provides a mechanism for specifying the translations, rotations and scales (transform arrays) of subgraph
-    /// that contains InstanceDraw leaf node(s) that utlize the InstanceNode's per instance transform arrays combined with the
+    /// that contains InstanceDraw leaf node(s) that utilize the InstanceNode's per instance transform arrays combined with the
     /// InstanceDraw nodes per vertex arrays.
     ///
-    /// InstanceNode only work correctly when the child subgraphs that obey these contraints:
+    /// InstanceNode only work correctly when the child subgraphs that obey these constraints:
     /// 1. Do not contain any Transform nodes
     /// 2. Do not contain any Culling nodes
     /// 3. Do not contain any InstanceNode nodes