Remove non ASCII char in tree representation

Some comments representing a file tree were
using non ASCII characters.
They are not readable on many editors leading to
incoherent display.

Replace them by plain ASCII characters.

Signed-off-by: Kevin Rocard <kevinx.rocard@intel.com>
diff --git a/parameter/ParameterMgr.cpp b/parameter/ParameterMgr.cpp
index 32082b3..7cb1042 100644
--- a/parameter/ParameterMgr.cpp
+++ b/parameter/ParameterMgr.cpp
@@ -99,17 +99,17 @@
 
 // Config File System looks normally like this:
 // ---------------------------------------------
-//├── <ParameterFrameworkConfiguration>.xml
-//├── Schemas
-//│   └── *.xsd
-//├── Settings
-//│   └── <SystemClassName folder>*
-//│       ├── <ConfigurableDomains>.xml
-//│       └── <Settings>.bin?
-//└── Structure
-//    └── <SystemClassName folder>*
-//        ├── <SystemClassName>Class.xml
-//        └── <Subsystem>.xml*
+//|-- <ParameterFrameworkConfiguration>.xml
+//|-- Schemas
+//|   `-- *.xsd
+//|-- Settings
+//|   `-- <SystemClassName folder>*
+//|       |-- <ConfigurableDomains>.xml
+//|       `-- <Settings>.bin?
+//`-- Structure
+//    `-- <SystemClassName folder>*
+//        |-- <SystemClassName>Class.xml
+//        `-- <Subsystem>.xml*
 // --------------------------------------------