Link to favicon returns text content-type instead of graphic, how to change?

Question

linux

Faced such a problem when communicating with search engine support:
Your favicon from the line

<link rel=«shortcut icon» href="http://site.ru/files/icons/favicon.ico" type=«image/vnd.microsoft.icon» />

gives our robot a text content-type, but we need a graphic one.
The server has CentOS, Nginx installed. Tell me where the settings for specifying types are stored?

Answer 1

The issue was resolved.
During the analysis, it turned out that although the nginx configuration file contained the specified types:
/etc/nginx/mime.types
Data for display was extracted from the file:
/etc/mime.types
And it was necessary to add a line
After that, everything began to be reflected correctly.