Merge pull request #103 from csg-tokyo/docs-version-2.0.x

docs: update version 2.0.x

Author: maejima-fumika

website/versioned_docs/version-2.0.x/reference/cli.md

@@ -54,7 +54,7 @@ bscript project install [git-url] [options]
 ```
 
 **Arguments:**
-*   `<git-url>`: (Optional) The URL of the Git repository to add as a dependency.
+*   `[git-url]`: (Optional) The URL of the Git repository to add as a dependency.
 
 **Options:**
 
@@ -81,9 +81,12 @@ bscript project install https://github.com/bluescript/drivers.git --tag v2.0.0
 Uninstall the specified package from the current project.
 
 ```bash
-bscript project uninstall [package-name]
+bscript project uninstall <package-name>
 ```
 
+**Arguments:**
+*   `<package-name>`: The package name to uninstall.
+
 ---
 
 ### `bscript project run`
@@ -164,6 +167,9 @@ bscript board remove <board-name> [options]
 
 By default, this command asks for confirmation before deleting files.
 
+**Arguments:**
+*   `<board-name>`: The target board identifier (e.g., `esp32`).
+
 **Options:**
 
 | Option | Alias | Description |
@@ -189,6 +195,16 @@ By default, this command asks for confirmation before deleting files.
 
 ---
 
+### `bscript board update`
+
+Update the version of installed environments.
+
+```bash
+bscript board update
+```
+
+---
+
 ## Other Commands
 
 ### `bscript repl`

website/versioned_docs/version-2.0.x/reference/language/built-in-objects.md

@@ -109,6 +109,15 @@ The initial values are zero, `false`, or `undefined`.
 For example, `new Array<integer>(7)` is a valid expression, and it
 constructs an array including 7 elements.
 
+The constructor for the `Array<T>` type provides two other overloads: one accepting an array of type `T[]`, and another accepting an array of type `any[]`.  This is particularly convenient when initializing an array using a variable of type `any`."
+
+```tsx
+let three: any = 3
+let arr = [1, 2, three]                         // arr is any[]
+let arr2 = new Array<integer>([1, 2, three])    // arr2 is integer[]
+```
+
+
 ### Type Annotations
 
 Array types are represented by `Type[]`.  Here, `Type` is a meta variable representing the type name of array elements.