Remove redundant content-type header

src/main/controllers/web.zig

@@ -25,8 +25,6 @@ const about = struct {
     pub const method = .GET;
 
     pub fn handler(_: anytype, res: anytype, srv: anytype) !void {
-        try res.headers.put("Content-Type", "text/html");
-
         try res.template(.ok, tmpl, .{
             .community = srv.community,
         });