fix(nginx): add general redirect to remove trailing slashes (#2225)

Adds a location block to remove trailing slashes from all URLs (except
root /). This fixes the 404 error when accessing URLs like /api/v2/ with
a trailing slash.

Uses a regex location block instead of a rewrite rule for clearer
processing precedence. Exact match locations (e.g., location = /sdk/js/)
take priority over this regex, so existing handlers are unaffected.

Slack thread:
https://apify.slack.com/archives/C0L33UM7Z/p1770281199186039

https://claude.ai/code/session_01GqcrG6JU9Y1YaSA5ns87Yz

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Simple Nginx routing change; main risk is unexpected redirects for
endpoints that intentionally rely on trailing slashes.
> 
> **Overview**
> Adds a global Nginx `location` regex that **redirects any non-root URL
ending in `/` to the same path without the trailing slash**.
> 
> This prevents 404s for requests like `/api/v2/` while keeping explicit
exact-match locations (e.g., `location = /sdk/js/`) higher priority than
the new catch-all redirect.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
99d352c. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Claude <noreply@anthropic.com>

Author: B4nan

nginx.conf

@@ -34,6 +34,12 @@ server {
         proxy_pass $backend$uri;
     }
 
+    # remove trailing slashes from all URLs (except root /)
+    # exact match locations (e.g., location = /sdk/js/) take priority over this regex
+    location ~ "^(.+)/$" {
+        return 301 $1$is_args$args;
+    }
+
     location / {
         set $rewrite_condition "$serve_markdown$has_no_extension";
         set $proxy_path $request_uri;
@@ -460,9 +466,6 @@ server {
     rewrite ^/sdk/python/$ /sdk/python redirect;
     rewrite ^/cli/$ /cli redirect;
 
-    # remove trailing slashes from all other URLs (except root /)
-    rewrite ^(.+)/$ $1 redirect;
-
     # versions page redirects
     rewrite ^/versions/?$ / permanent; # no docs-wide changelog, redirect to the root
     rewrite ^/cli/versions/?$ /cli/docs/changelog permanent;