modify elementpath version =2.5.0

Modify elementpatch version and update doc part

Tracked-On:#6688
Signed-off-by: wenlingz <[email protected]>

Author: wenlingz

debian/control

@@ -34,7 +34,7 @@ Build-Depends:
    python3-lxml,
    python3-defusedxml,
    python3-xmlschema (>= 1.10.0),
-   python3-elementpath (>= 2.5.0),
+   python3-elementpath (= 2.5.0),
    python3-requests,
    python3-tqdm
 Standards-Version: 4.3.0

doc/getting-started/getting-started.rst

@@ -135,7 +135,7 @@ To set up the ACRN build environment on the development computer:
 
    .. code-block:: bash
 
-      sudo pip3 install "elementpath<=2.5.0" lxml xmlschema defusedxml tqdm
+      sudo pip3 install "elementpath==2.5.0" lxml xmlschema defusedxml tqdm
 
 #. Create a working directory: