Documentation/remote-helpers: Fix typos and improve language

Fix some typos and errors in grammar and tense.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Acked-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-remote-helpers.txt

@@ -74,8 +74,8 @@ Commands are given by the caller on the helper's standard input, one per line.
 
 'capabilities'::
 	Lists the capabilities of the helper, one per line, ending
-	with a blank line. Each capability may be preceded with '*'.
+	with a blank line. Each capability may be preceded with '*',
-	This marks them mandatory for git version using the remote
+	which marks them mandatory for git version using the remote
 	helper to understand (unknown mandatory capability is fatal
 	error).
 
@@ -84,27 +84,27 @@ Commands are given by the caller on the helper's standard input, one per line.
 	[<attr> ...]". The value may be a hex sha1 hash, "@<dest>" for
 	a symref, or "?" to indicate that the helper could not get the
 	value of the ref. A space-separated list of attributes follows
-	the name; unrecognized attributes are ignored. After the
+	the name; unrecognized attributes are ignored. The list ends
-	complete list, outputs a blank line.
+	with a blank line.
 +
 If 'push' is supported this may be called as 'list for-push'
 to obtain the current refs prior to sending one or more 'push'
 commands to the helper.
 
 'option' <name> <value>::
-	Set the transport helper option <name> to <value>.  Outputs a
+	Sets the transport helper option <name> to <value>.  Outputs a
 	single line containing one of 'ok' (option successfully set),
 	'unsupported' (option not recognized) or 'error <msg>'
-	(option <name> is supported but <value> is not correct
+	(option <name> is supported but <value> is not valid
 	for it).  Options should be set before other commands,
-	and may how those commands behave.
+	and may influence the behavior of those commands.
 +
 Supported if the helper has the "option" capability.
 
 'fetch' <sha1> <name>::
 	Fetches the given object, writing the necessary objects
 	to the database.  Fetch commands are sent in a batch, one
-	per line, and the batch is terminated with a blank line.
+	per line, terminated with a blank line.
 	Outputs a single blank line when all fetch commands in the
 	same batch are complete. Only objects which were reported
 	in the ref list with a sha1 may be fetched this way.
@@ -116,7 +116,7 @@ suitably updated.
 Supported if the helper has the "fetch" capability.
 
 'push' +<src>:<dst>::
-	Pushes the given <src> commit or branch locally to the
+	Pushes the given local <src> commit or branch to the
 	remote branch described by <dst>.  A batch sequence of
 	one or more push commands is terminated with a blank line.
 +
@@ -140,6 +140,9 @@ Supported if the helper has the "push" capability.
 	by applying the refspecs from the "refspec" capability to the
 	name of the ref.
 +
+Especially useful for interoperability with a foreign versioning
+system.
++
 Supported if the helper has the "import" capability.
 
 'connect' <service>::
@@ -168,16 +171,11 @@ CAPABILITIES
 ------------
 
 'fetch'::
-	This helper supports the 'fetch' command.
-
 'option'::
-	This helper supports the option command.
-
 'push'::
-	This helper supports the 'push' command.
-
 'import'::
-	This helper supports the 'import' command.
+'connect'::
+	This helper supports the corresponding command with the same name.
 
 'refspec' 'spec'::
 	When using the import command, expect the source ref to have
@@ -189,9 +187,6 @@ CAPABILITIES
 	all, it must cover all refs reported by the list command; if
 	it is not used, it is effectively "*:*"
 
-'connect'::
-	This helper supports the 'connect' command.
-
 REF LIST ATTRIBUTES
 -------------------
 
@@ -207,19 +202,19 @@ REF LIST ATTRIBUTES
 OPTIONS
 -------
 'option verbosity' <N>::
-	Change the level of messages displayed by the helper.
+	Changes the verbosity of messages displayed by the helper.
-	When N is 0 the end-user has asked the process to be
+	A value of 0 for N means that processes operate
-	quiet, and the helper should produce only error output.
+	quietly, and the helper produces only error output.
-	N of 1 is the default level of verbosity, higher values
+	1 is the default level of verbosity, and higher values
 	of N correspond to the number of -v flags passed on the
 	command line.
 
 'option progress' \{'true'|'false'\}::
-	Enable (or disable) progress messages displayed by the
+	Enables (or disables) progress messages displayed by the
 	transport helper during a command.
 
 'option depth' <depth>::
-	Deepen the history of a shallow repository.
+	Deepens the history of a shallow repository.
 
 'option followtags' \{'true'|'false'\}::
 	If enabled the helper should automatically fetch annotated
@@ -235,9 +230,9 @@ OPTIONS
 	helpers this only applies to the 'push', if supported.
 
 'option servpath <c-style-quoted-path>'::
-	Set service path (--upload-pack, --receive-pack etc.) for
+	Sets service path (--upload-pack, --receive-pack etc.) for
-	next connect. Remote helper MAY support this option. Remote
+	next connect. Remote helper may support this option, but
-	helper MUST NOT rely on this option being set before
+	must not rely on this option being set before
 	connect request occurs.
 
 SEE ALSO