[FIX] mrp: fix typo in mrp_immediate_production_views

Typo error detected on `/mrp/wizard/mrp_immediate_production_views.xml`.
It doesn't cause any issue on module installation or updates, but
it's probably gonna cause issue on view inheritance.

If you can confirm this is unintended typo I will edit commit msg.
I also detected this on version 15.0 and 16.0.

closes odoo/odoo#134070

Signed-off-by: William Henrotin (whe) <whe@odoo.com>

addons/mrp/wizard/mrp_immediate_production_views.xml

@@ -10,7 +10,7 @@
                 </group>
 
                 <field name="show_productions" invisible="1"/>
-                <field name="immediate_production_line_ids" nolabel="1" attrs="{'invisible': [('show_productions', '=', False)]}">>
+                <field name="immediate_production_line_ids" nolabel="1" attrs="{'invisible': [('show_productions', '=', False)]}">
                     <tree create="0" delete="0" editable="top">
                         <field name="production_id"/>
                         <field name="to_immediate" widget="boolean_toggle"/>