minor fixes/tweaks to help output of a few commands

lib/do_cloudapi.js

@@ -94,7 +94,7 @@ do_cloudapi.help = (
     'Raw cloudapi request.\n'
     + '\n'
     + 'Usage:\n'
-    + '     {{name}} [-X method] [-H header=value] <endpoint>\n'
+    + '     {{name}} cloudapi [-X method] [-H header=value] <endpoint>\n'
     + '\n'
     + '{{options}}'
 );

lib/do_info.js

@@ -109,7 +109,7 @@ do_info.help = (
     'Print an account summary.\n'
     + '\n'
     + 'Usage:\n'
-    + '     {{name}} account\n'
+    + '     {{name}} info\n'
     + '\n'
     + '{{options}}'
 );

lib/do_startstop_instance.js

@@ -43,7 +43,7 @@ function do_startstop_instance(opts) {
     _do_startstop_instance.aliases = aliases;
 
     _do_startstop_instance.help = [
-        f('%s a single instance.', common.capitalize(action)),
+        f('%s one or more instances.', common.capitalize(action)),
         f(''),
         f('Usage:'),
         f('     {{name}} %s <alias|id> ...', action),