docs: fix typos

Fix some typos and grammar errors in comments and documentation files.

Signed-off-by: Tuomas Ahola <taahol@utu.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/config/sideband.adoc

@@ -13,7 +13,7 @@ sideband.allowControlCharacters::
 		Allow control sequences that move the cursor. This is
 		disabled by default.
 	`erase`::
-		Allow control sequences that erase charactrs. This is
+		Allow control sequences that erase characters. This is
 		disabled by default.
 	`false`::
 		Mask all control characters other than line feeds and

Documentation/git-format-rev.adoc

@@ -33,7 +33,7 @@ OPTIONS
 The argument `rev` is also accepted.
 
 `text`;; Formats all commit object names found in freeform text. These
-	must the full object names, i.e. abbreviated hexidecimal object
+	must be full object names, i.e. abbreviated hexadecimal object
 	names will not be interpreted.
 +
 Anything that is parsed as an object name but that is not found to be a

date.c

@@ -1074,7 +1074,7 @@ void datestamp(struct strbuf *out)
  *
  * The tm->tm_mday field has an additional logic of using negative values
  * for date adjustments: -2 means yesterday and -3 the day before that,
- * and so on.  The idea is to deref such adjustments until we are sure
+ * and so on.  The idea is to defer such adjustments until we are sure
  * there's no explicit mday specification in the approxidate string.
  */
 static time_t update_tm(struct tm *tm, struct tm *now, time_t sec)

replay.h

@@ -32,7 +32,7 @@ struct replay_revisions_options {
 
 	/*
 	 * Starting point at which to create the new commits; must be a
-	 * committish. References pointing at decendants of `onto` will be
+	 * committish. References pointing at descendants of `onto` will be
 	 * updated to point to the new commits.
 	 */
 	const char *onto;

t/t9902-completion.sh

@@ -2444,7 +2444,7 @@ test_expect_success FUNNYNAMES \
 	>repeated-quoted/2-file &&
 	>repeated-quoted/3\"file &&   # ... and here, too.
 
-	# Still, we shold only list the directory name only once.
+	# Still, we should list the directory name only once.
 	test_path_completion repeated repeated-quoted
 '