docs: Update logo and favicon to new branding

Author: sarina

oeps/_static/favicon.ico

@@ -164,20 +164,17 @@
 }
 
 
-# The name of an image file (relative to this directory) to place at the top
-# of the sidebar.
-html_logo = "_static/open-edx-logo-color.png"
-
-# The name of an image file (relative to this directory) to use as a favicon of
-# the docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
-# pixels large.
-html_favicon = "_static/favicon.ico"
+# The name of an image file to place at the top of the sidebar.
+html_logo = "https://logos.openedx.org/open-edx-logo-color.png"
+
+# The name of an image file to use as a favicon of this site.
+html_favicon = "https://logos.openedx.org/open-edx-favicon.ico"
 theme_logo_only = True
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ["_static"]
+# html_static_path = ["_static"]
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the