doc: fix some placeholders formating

Signed-off-by: Jean-Noël Avila <jn.avila@free.fr>
Acked-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-interpret-trailers.txt

@@ -9,7 +9,7 @@ SYNOPSIS
 --------
 [verse]
 'git interpret-trailers' [--in-place] [--trim-empty]
-			[(--trailer (<key>|<keyAlias>)[(=|:)<value>])...]
+			[(--trailer (<key>|<key-alias>)[(=|:)<value>])...]
 			[--parse] [<file>...]
 
 DESCRIPTION
@@ -67,9 +67,9 @@ key: value
 This means that the trimmed <key> and <value> will be separated by
 `': '` (one colon followed by one space).
 
-For convenience, a <keyAlias> can be configured to make using `--trailer`
+For convenience, a <key-alias> can be configured to make using `--trailer`
 shorter to type on the command line. This can be configured using the
-'trailer.<keyAlias>.key' configuration variable. The <keyAlias> must be a prefix
+'trailer.<key-alias>.key' configuration variable. The <keyAlias> must be a prefix
 of the full <key> string, although case sensitivity does not matter. For
 example, if you have
 

Documentation/git.txt

@@ -942,7 +942,7 @@ will never be returned from the commit-graph at the cost of performance.
 `GIT_PROTOCOL`::
 	For internal use only.  Used in handshaking the wire protocol.
 	Contains a colon ':' separated list of keys with optional values
-	'key[=value]'.  Presence of unknown keys and values must be
+	'<key>[=<value>]'.  Presence of unknown keys and values must be
 	ignored.
 +
 Note that servers may need to be configured to allow this variable to

Documentation/rev-list-options.txt

@@ -316,12 +316,12 @@ list.
 With `--pretty` format other than `oneline` and `reference` (for obvious reasons),
 this causes the output to have two extra lines of information
 taken from the reflog.  The reflog designator in the output may be shown
-as `ref@{Nth}` (where `Nth` is the reverse-chronological index in the
-reflog) or as `ref@{timestamp}` (with the timestamp for that entry),
+as `ref@{<Nth>}` (where _<Nth>_ is the reverse-chronological index in the
+reflog) or as `ref@{<timestamp>}` (with the _<timestamp>_ for that entry),
 depending on a few rules:
 +
 --
-1. If the starting point is specified as `ref@{Nth}`, show the index
+1. If the starting point is specified as `ref@{<Nth>}`, show the index
    format.
 +
 2. If the starting point was specified as `ref@{now}`, show the

builtin/interpret-trailers.c

@@ -14,7 +14,7 @@
 
 static const char * const git_interpret_trailers_usage[] = {
 	N_("git interpret-trailers [--in-place] [--trim-empty]\n"
-	   "                       [(--trailer (<key>|<keyAlias>)[(=|:)<value>])...]\n"
+	   "                       [(--trailer (<key>|<key-alias>)[(=|:)<value>])...]\n"
 	   "                       [--parse] [<file>...]"),
 	NULL
 };