Merge pull request #2031 from NginxProxyManager/dependabot/npm_and_yarn/docs/async-3.2.2

Bump async from 3.2.0 to 3.2.2 in /docs

docs/yarn.lock

@@ -1885,9 +1885,9 @@ async@^2.6.2:
     lodash "^4.17.14"
 
 async@^3.2.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/async/-/async-3.2.0.tgz#b3a2685c5ebb641d3de02d161002c60fc9f85720"
-  integrity sha512-TR2mEZFVOj2pLStYxLht7TyfuRzaydfpxr3k9RpHIzMgw7A64dzsdqCxH1WJyQdoe8T10nDXd9wnEigmiuHIZw==
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/async/-/async-3.2.2.tgz#2eb7671034bb2194d45d30e31e24ec7e7f9670cd"
+  integrity sha512-H0E+qZaDEfx/FY4t7iLRv1W2fFI6+pyCeTw1uN20AQPiwqwM6ojPxHxdLv4z8hi2DtnW9BOckSspLucW7pIE5g==
 
 asynckit@^0.4.0:
   version "0.4.0"