security: Replace phosphor-webui with webui-vue

webui-vue is a modern replacement for phosphor-webui.
Overall the community has already moved to webui-vue.
Replace references to phosphor-webui with webui-vue.

Some reasons why webui-vue is preferred over phosphor-webui:
phosphor-webui uses AngularJS which has gone End of Life.
phosphor-webui uses the REST D-BUS API which has been disabled by
default.
webui-vue has additional features.

Change-Id: Ieb027814e226c9d7db8edbf2ca64da26e697fd16
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/security/network-security-considerations.md b/security/network-security-considerations.md
index 3ad11b0..e2189ba 100644
--- a/security/network-security-considerations.md
+++ b/security/network-security-considerations.md
@@ -152,7 +152,7 @@
 
 BMCWeb is the Web server for:
  - The Redfish REST APIs.
- - The phosphor-webui Web interface.
+ - The webui-vue Web interface.
  - The Phosphor D-Bus REST interface.
 And initiates WebSockets for:
  - Host KVM.
@@ -207,11 +207,11 @@
 section of the "Redfish Specification" (document ID DSP0266) available
 from https://www.dmtf.org/standards/redfish.
 
-#### The phosphor-webui Web application
+#### The webui-vue Web application
 
 General considerations for Web applications such as given by [OWASP
 Web Application Security Guidance][] apply to OpenBMC.  The
-phosphor-webui uses username and password-based authentication, and
+webui-vue uses username and password-based authentication, and
 REST APIs for subsequent access.
 
 [OWASP Web Application Security Guidance]: https://www.owasp.org/index.php/Web_Application_Security_Guidance