Fix typo 'begining' to 'beginning'

editor/editor_data.cpp

@@ -141,7 +141,7 @@ ObjectID EditorHistory::get_history_obj(int p_obj) const {
 	return history[p_obj].path[history[p_obj].level].object;
 }
 
-bool EditorHistory::is_at_begining() const {
+bool EditorHistory::is_at_beginning() const {
 	return current <= 0;
 }
 bool EditorHistory::is_at_end() const {

editor/editor_data.h

@@ -74,7 +74,7 @@ class EditorHistory {
 	void _add_object(ObjectID p_object, const String &p_property, int p_level_change);
 
 public:
-	bool is_at_begining() const;
+	bool is_at_beginning() const;
 	bool is_at_end() const;
 
 	void add_object(ObjectID p_object);

editor/editor_node.cpp

@@ -1373,7 +1373,7 @@ void EditorNode::_edit_current() {
 	uint32_t current = editor_history.get_current();
 	Object *current_obj = current > 0 ? ObjectDB::get_instance(current) : NULL;
 
-	property_back->set_disabled(editor_history.is_at_begining());
+	property_back->set_disabled(editor_history.is_at_beginning());
 	property_forward->set_disabled(editor_history.is_at_end());
 
 	this->current = current_obj;

servers/visual/shader_language.cpp

@@ -3349,7 +3349,7 @@ Error ShaderLanguage::_parse_shader(const Map<StringName, FunctionInfo> &p_funct
 	Token tk = _get_token();
 
 	if (tk.type != TK_SHADER_TYPE) {
-		_set_error("Expected 'shader_type' at the begining of shader.");
+		_set_error("Expected 'shader_type' at the beginning of shader.");
 		return ERR_PARSE_ERROR;
 	}