modified document content

Author: dixyushi

documentation/Functions.md

@@ -329,12 +329,12 @@ This function consist of two parameter.
 
 1. First parameter:
     - **Required**
-    - **type**- String
+    - **Type**- String
     - **Description**-It is the path to the Angular project, relative to workspace.
 
 2. Second parameter:
     - **optional**
-    - **type**- String
+    - **Type**- String
     - **Description**- It is the custom output directory.
 #### example 
 * buildNg("exampleAngularProject")
@@ -350,6 +350,8 @@ Note:
 
 3. No background script will run.
 
+4. To execute this function devonfw-ide must be installed.
+
 ***
 
 ### runClientNg <a name="runClientNg"></a>