nginx config reverse proxy lose basepath on redirect without slash

i have the following nginx configs to redirect the url path to it's perspective services

server {
    listen 80;
    server_name abc.com;
    location = favicon.ico { access_log off; log_not_found off }
    
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_cache_bypass $http_upgrade;
    

    location /a-ms/ {
       rewrite /a-ms/(.*) /$1 break;
       proxy_pass http:host.docker.internal:3000/;
    }
    
    location /b-ms/ {
       rewrite /b-ms/(.*) /$1 break;
       proxy_pass http:host.docker.internal:4000/;
    }
    
}

the backend microservices using nodejs to host the api and swagger doc

When i got to a url from a browser like abc.com/a-ms/doc/ it return the swagger normal, but when i go to url without slash for example abc.com/a-ms/doc it redirected me to abc.com/doc which is not what i wanted(it missing the location path)(. How do i fix this with nginx config settings?