cbt: fix go generate command

This commit ensures 'go generate' works when using the command to
generate cbtdoc.go. The commit also includes a regenerated cbtdoc.go
with a minor formatting fix.

Change-Id: I761837e1115da66e21e20dd4a5387cce66f45321
Reviewed-on: https://code-review.googlesource.com/c/34470
Reviewed-by: Jonathan Amsterdam <jba@google.com>
diff --git a/bigtable/cmd/cbt/cbt.go b/bigtable/cmd/cbt/cbt.go
index 1c6eed1..c2d3307 100644
--- a/bigtable/cmd/cbt/cbt.go
+++ b/bigtable/cmd/cbt/cbt.go
@@ -252,8 +252,8 @@
 		do:   doCreateTable,
 		Usage: "cbt createtable <table> [families=family[:gcpolicy],...] [splits=split,...]\n" +
 			"  families: Column families and their associated GC policies. For gcpolicy,\n" +
-			"                    see \"setgcpolicy\".\n" +
-			"  					 Example: families=family1:maxage=1w,family2:maxversions=1\n" +
+			"  					see \"setgcpolicy\".\n" +
+			"					Example: families=family1:maxage=1w,family2:maxversions=1\n" +
 			"  splits:   Row key to be used to initially split the table",
 		Required: cbtconfig.ProjectAndInstanceRequired,
 	},
@@ -808,7 +808,7 @@
 
 // DO NOT EDIT. THIS IS AUTOMATICALLY GENERATED.
 // Run "go generate" to regenerate.
-//go:generate go run cbt.go -o cbtdoc.go doc
+//go:generate go run cbt.go gcpolicy.go -o cbtdoc.go doc
 
 /*
 Cbt is a tool for doing basic interactions with Cloud Bigtable. To learn how to
diff --git a/bigtable/cmd/cbt/cbtdoc.go b/bigtable/cmd/cbt/cbtdoc.go
index 59d559f..57d07ea 100644
--- a/bigtable/cmd/cbt/cbtdoc.go
+++ b/bigtable/cmd/cbt/cbtdoc.go
@@ -14,7 +14,7 @@
 
 // DO NOT EDIT. THIS IS AUTOMATICALLY GENERATED.
 // Run "go generate" to regenerate.
-//go:generate go run cbt.go -o cbtdoc.go doc
+//go:generate go run cbt.go gcpolicy.go -o cbtdoc.go doc
 
 /*
 Cbt is a tool for doing basic interactions with Cloud Bigtable. To learn how to
@@ -141,8 +141,8 @@
 Usage:
 	cbt createtable <table> [families=family[:gcpolicy],...] [splits=split,...]
 	  families: Column families and their associated GC policies. For gcpolicy,
-						 see "setgcpolicy".
-	  					 Example: families=family1:maxage=1w,family2:maxversions=1
+	  					see "setgcpolicy".
+						Example: families=family1:maxage=1w,family2:maxversions=1
 	  splits:   Row key to be used to initially split the table