[PATCH] Assorted documentation patches

[jc: Johannes spent time and effort to see how consistent our
use of terminilogy is, and as a byproduct made these corrections
not related to the terminology unification.  I really appreciate
it.]

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/Documentation/git-ls-tree.txt b/Documentation/git-ls-tree.txt
index 958b56d..fdb215e 100644
--- a/Documentation/git-ls-tree.txt
+++ b/Documentation/git-ls-tree.txt
@@ -19,7 +19,7 @@
 OPTIONS
 -------
 <tree-ish>::
-	Id of a tree.
+	Id of a tree-ish.
 
 -d::
 	show only the named tree entry itself, not its children
@@ -31,7 +31,7 @@
 	\0 line termination on output
 
 paths::
-	When paths are given, shows them.  Otherwise implicitly
+	When paths are given, show them.  Otherwise implicitly
 	uses the root level of the tree as the sole path argument.