Expand undefined alias

"lga" is not defined anywhere in the text; all other examples use explicit "git log ..."

Signed-off-by: Thomas Ackermann <[email protected]>

Author: tacker66

book/09-git-and-other-scms/sections/client-tfs.asc

@@ -387,7 +387,7 @@ As an example, let's create one:
 PS> git tfs branch $/tfvc-test/featureBee
 The name of the local branch will be : featureBee
 C26 = 1d54865c397608c004a2cadce7296f5edc22a7e5
-PS> git lga
+PS> git log --oneline --graph --decorate --all
 * 1d54865 (tfs/featureBee) Creation branch $/myproject/featureBee
 * ff04e7c (HEAD, tfs/default, master) update code
 * 71a5ddc update readme