rename vendor-bins.md to vendor-binaries.md

doc/03-cli.md

@@ -380,7 +380,7 @@ directory other than `vendor`.
 
 ### COMPOSER_BIN_DIR
 
-By setting this option you can change the `bin` ([Vendor Binaries](articles/vendor-bins.md))
+By setting this option you can change the `bin` ([Vendor Binaries](articles/vendor-binaries.md))
 directory to something other than `vendor/bin`.
 
 ### http_proxy or HTTP_PROXY

doc/04-schema.md

@@ -646,7 +646,7 @@ Optional.
 A set of files that should be treated as binaries and symlinked into the `bin-dir`
 (from config).
 
-See [Vendor Binaries](articles/vendor-bins.md) for more details.
+See [Vendor Binaries](articles/vendor-binaries.md) for more details.
 
 Optional.