Update toolkite-guide.doc. Fix typo.
This closes
@@ -747,7 +747,7 @@ Standalone mode is invoked by running `./bin/tls-toolkit.sh standalone` or `bin\
===== Usage
To show help:
- ./bin/tls-toolkit.sh standlone -h
+ ./bin/tls-toolkit.sh standalone -h
The following are available options:
