Documentation/git-worktree: wordsmith worktree-related manpages

[es: reword .git/worktrees and .git/worktrees/<id>/locked descriptions]

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/config.txt

@@ -1231,10 +1231,11 @@ gc.pruneexpire::
 
 gc.pruneworktreesexpire::
 	When 'git gc' is run, it will call
+	When 'git gc' is run, it calls
 	'git worktree prune --expire 3.months.ago'.
-	Override the grace period with this config variable. The value
-	"now" may be used to disable the grace period and prune
-	$GIT_DIR/worktrees immediately.
+	This config variable can be used to set a different grace
+	period. The value "now" may be used to disable the grace
+	period and prune $GIT_DIR/worktrees immediately.
 
 gc.reflogexpire::
 gc.<pattern>.reflogexpire::

Documentation/gitrepository-layout.txt

@@ -251,25 +251,25 @@ modules::
 	Contains the git-repositories of the submodules.
 
 worktrees::
-	Contains working tree specific information of linked
+	Contains administrative data for linked
 	working trees. Each subdirectory contains the working tree-related
 	part of a linked working tree. This directory is ignored if
-	$GIT_COMMON_DIR is set and "$GIT_COMMON_DIR/worktrees" will be
-	used instead.
+	$GIT_COMMON_DIR is set, in which case
+	"$GIT_COMMON_DIR/worktrees" will be used instead.
 
 worktrees/<id>/gitdir::
 	A text file containing the absolute path back to the .git file
 	that points to here. This is used to check if the linked
 	repository has been manually removed and there is no need to
-	keep this directory any more. mtime of this file should be
+	keep this directory any more. The mtime of this file should be
 	updated every time the linked repository is accessed.
 
 worktrees/<id>/locked::
 	If this file exists, the linked working tree may be on a
-	portable device and not available. It does not mean that the
-	linked working tree is gone and `worktrees/<id>` could be
-	removed. The file's content contains a reason string on why
-	the repository is locked.
+	portable device and not available. The presence of this file
+	prevents `worktrees/<id>` from being pruned either automatically
+	or manually by `git worktree prune`. The file may contain a string
+	explaining why the repository is locked.
 
 worktrees/<id>/link::
 	If this file exists, it is a hard link to the linked .git