Add try_files directive comments to nginx.conf (#37866)

dist/nginx.conf

@@ -82,31 +82,37 @@ server {
   location ^~ /avatars/ {
     add_header Cache-Control "public, max-age=2419200, must-revalidate";
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    # try_files $uri @mastodon;
   }
 
   location ^~ /emoji/ {
     add_header Cache-Control "public, max-age=2419200, must-revalidate";
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    # try_files $uri @mastodon;
   }
 
   location ^~ /headers/ {
     add_header Cache-Control "public, max-age=2419200, must-revalidate";
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    # try_files $uri @mastodon;
   }
 
   location ^~ /ocr/ {
     add_header Cache-Control "public, max-age=2419200, must-revalidate";
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    # try_files $uri @mastodon;
   }
 
   location ^~ /packs/ {
     add_header Cache-Control "public, max-age=2419200, must-revalidate";
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    # try_files $uri @mastodon;
   }
 
   location ^~ /sounds/ {
     add_header Cache-Control "public, max-age=2419200, must-revalidate";
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
+    # try_files $uri @mastodon;
   }
 
   location ^~ /system/ {
@@ -114,6 +120,7 @@ server {
     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains";
     add_header X-Content-Type-Options nosniff;
     add_header Content-Security-Policy "default-src 'none'; form-action 'none'";
+    # try_files $uri @mastodon;
   }
 
   location ^~ /api/v1/streaming {