fs: fix doc nits

Change-Id: I87db804ce6df8b21f4cfba8557395b0067a177da

fs/api.go

@@ -66,7 +66,7 @@
 //
 // Inode: ("index node") points to the file content, and stores
 // metadata (size, timestamps) about a file or directory. Each
-// directory has a type (directory, symlink, regular file, etc.) and
+// inode has a type (directory, symlink, regular file, etc.) and
 // an identity (a 64-bit number, unique to the file
 // system). Directories can have children.
 //

fs/example_test.go

@@ -14,9 +14,9 @@ import (
 	"github.com/hanwen/go-fuse/fuse"
 )
 
-// An example of creating a loopback file system, and mounting it onto
-// a directory
-func Example_mountLoopback() {
+// ExampleMount shows how to create a loopback file system, and
+// mounting it onto a directory
+func Example_mount() {
 	mntDir, _ := ioutil.TempDir("", "")
 	home := os.Getenv("HOME")
 	// Make $HOME available on a mount dir under /tmp/ . Caution: