fix(docs): Add the missing docs

Because I was too stupid to regen the docs and flake made it so we
didn't get a reminder

docs/helm/helm_package.md

@@ -23,16 +23,17 @@ helm package [flags] [CHART_PATH] [...]
 ### Options
 
 ```
-      --app-version string   set the appVersion on the chart to this version
-  -u, --dependency-update    update dependencies from "requirements.yaml" to dir "charts/" before packaging
-  -d, --destination string   location to write the chart. (default ".")
-      --key string           name of the key to use when signing. Used if --sign is true
-      --keyring string       location of a public keyring (default "~/.gnupg/pubring.gpg")
-      --save                 save packaged chart to local chart repository (default true)
-      --set stringArray      set values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)
-      --sign                 use a PGP private key to sign this package
-  -f, --values valueFiles    specify values in a YAML file or a URL(can specify multiple) (default [])
-      --version string       set the version on the chart to this semver version
+      --app-version string       set the appVersion on the chart to this version
+  -u, --dependency-update        update dependencies from "requirements.yaml" to dir "charts/" before packaging
+  -d, --destination string       location to write the chart. (default ".")
+      --key string               name of the key to use when signing. Used if --sign is true
+      --keyring string           location of a public keyring (default "~/.gnupg/pubring.gpg")
+      --save                     save packaged chart to local chart repository (default true)
+      --set stringArray          set values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)
+      --set-string stringArray   set STRING values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)
+      --sign                     use a PGP private key to sign this package
+  -f, --values valueFiles        specify values in a YAML file or a URL(can specify multiple) (default [])
+      --version string           set the version on the chart to this semver version
 ```
 
 ### Options inherited from parent commands
@@ -49,4 +50,4 @@ helm package [flags] [CHART_PATH] [...]
 ### SEE ALSO
 * [helm](helm.md)	 - The Helm package manager for Kubernetes.
 
-###### Auto generated by spf13/cobra on 14-Mar-2018
+###### Auto generated by spf13/cobra on 6-Apr-2018