fixed typo

thanks https://github.com/spivotron

Author: unruledboy

Development Stack.png

@@ -180,7 +180,7 @@ https://rawgit.com/unruledboy/DevelopmentStack/master/ux/DevelopmentStack.htm
 				- ER Studio
 				- ERwin
 	- Development
-		- Concetps
+		- Concepts
 			- Zero Bug Bounce (ZBB)
 		- Development
 			- Integrated Development Environment (IDE)

README.md

@@ -403,7 +403,7 @@
       "name": "Development",
       "children": [
         {
-          "name": "Concetps",
+          "name": "Concepts",
           "children": [
             { "name": "Zero Bug Bounce (ZBB)" }
           ]