Update brand name

Author: 0hsn

docs/introduction.md

@@ -59,7 +59,7 @@ There is no native binary dependency, therefore it is expected on all the platfo
 
 ### Stability
 
-`chkware` is a tool collection. Followings are stability by tools:
+`CHKware` is a tool collection. Followings are stability by tools:
 
 Command name | Specification document | Stability
 ---|---|---

docs/references/concepts.md

@@ -2,9 +2,9 @@
 title: Core concepts and usage
 ---
 
-This page describes some key concepts before you use **`chkware`**.
+This page describes some key concepts before you use **`CHKware`**.
 
-There are two parts to **`chkware`** tool.
+There are two parts to **`CHKware`** tool.
 
 1. The command line tool `chk`, that you can run. `chk` [supported sub-commands](#supported-sub-commands) are listed below.
 2. The [specification files](#specification-files) those contains configuration in _YAML based dsl_. These files have extension `.chk`.