acme: point to the documentation on nginx.org

(cherry picked from commit 2ae8f75)

Author: thresheek

alpine/Makefile.module-acme

@@ -48,7 +48,7 @@ and reload nginx:
     load_module modules/ngx_http_acme_module.so;
 
 Please refer to the module documentation for further details:
-https://github.com/nginx/nginx-acme/
+https://nginx.org/en/docs/http/ngx_http_acme_module.html
 
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debian/Makefile.module-acme

@@ -49,7 +49,7 @@ and reload nginx:
     load_module modules/ngx_http_acme_module.so;
 
 Please refer to the module documentation for further details:
-https://github.com/nginx/nginx-acme/
+https://nginx.org/en/docs/http/ngx_http_acme_module.html
 
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 BANNER

rpm/SPECS/Makefile.module-acme

@@ -58,7 +58,7 @@ and reload nginx:
     load_module modules/ngx_http_acme_module.so;
 
 Please refer to the module documentation for further details:
-https://github.com/nginx/nginx-acme/
+https://nginx.org/en/docs/http/ngx_http_acme_module.html
 
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 BANNER