openpower: phosphor-webui: set wildcard to version

Update the bbappend to wildcard on the recipe's version.

Change-Id: I9126261c5c82742a5e8de585172f4072578873bf
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/recipes-phosphor/webui/phosphor-webui%.bbappend b/recipes-phosphor/webui/phosphor-webui_%.bbappend
similarity index 100%
rename from recipes-phosphor/webui/phosphor-webui%.bbappend
rename to recipes-phosphor/webui/phosphor-webui_%.bbappend