[FIX] theme_*: fix used separators in class and style updates

*: anelusia, artists, avantgarde, aviato, bistro, bookstore, buzzy,
   clean, enark, graphene, kea, kiddo, monglia, nano, notes,
   odoo_experts, paptic, real_estate, treehouse, vehicle, yes, zap

This commit fixes the wrong separators used when updating class and
style attributes.

task-4206845

X-original-commit: 38a02a269a
Part-of: odoo/design-themes#946
Related: odoo/odoo#181550
Signed-off-by: Alice Gaudon (agau) <agau@odoo.com>

theme_kea/views/snippets/s_framed_intro.xml

@@ -4,7 +4,7 @@
 <template id="s_framed_intro" inherit_id="website.s_framed_intro">
     <!-- Image -->
     <xpath expr="//div[hasclass('col-lg-5')]" position="attributes">
-        <attribute name="style" add="border-radius: 8px !important;" separator=" "/>
+        <attribute name="style" add="border-radius: 8px !important;" separator=";"/>
     </xpath>
     <xpath expr="//img" position="attributes">
         <attribute name="class" add="rounded" separator=" "/>

theme_kea/views/snippets/s_picture.xml

@@ -22,7 +22,7 @@
         Put yourself at the center of an extraordinary gaming universe with exclusive games.
     </xpath>
     <xpath expr="//p" position="attributes">
-        <attribute name="style" add="text-align: center;" separator=" "/>
+        <attribute name="style" add="text-align: center;" separator=";"/>
     </xpath>
     <!-- Caption -->
     <xpath expr="//figcaption" position="replace">