update packages to latest version

node_modules/npm/doc/api/npm-repo.md

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+npm-repo(3) -- Open package repository page in the browser
+========================================================
+
+## SYNOPSIS
+
+    npm.commands.repo(package, callback)
+
+## DESCRIPTION
+
+This command tries to guess at the likely location of a package's
+repository URL, and then tries to open it using the `--browser`
+config param.
+
+Like other commands, the first parameter is an array. This command only
+uses the first element, which is expected to be a package name with an
+optional version number.
+
+This command will launch a browser, so this command may not be the most
+friendly for programmatic use.