Fix RegEx example in class doc and correct typo

Fix minor errors to do with `search_all` example in RegEx and
typo in RegExMatch class docs.

(cherry picked from commit e5d93f7a66)

modules/regex/doc_classes/RegEx.xml

@@ -32,8 +32,7 @@
 		[codeblock]
 		for result in regex.search_all("d01, d03, d0c, x3f and x42"):
 		    print(result.get_string("digit"))
-		# Would print 01 03 3f 42
+		# Would print 01 03 0 3f 42
-		# Note that d0c would not match
 		[/codeblock]
 		[b]Note:[/b] Godot's regex implementation is based on the [url=https://www.pcre.org/]PCRE2[/url] library. You can view the full pattern reference [url=https://www.pcre.org/current/doc/html/pcre2pattern.html]here[/url].
 		[b]Tip:[/b] You can use [url=https://regexr.com/]Regexr[/url] to test regular expressions online.

modules/regex/doc_classes/RegExMatch.xml

@@ -49,7 +49,7 @@
 	</methods>
 	<members>
 		<member name="names" type="Dictionary" setter="" getter="get_names" default="{}">
-			A dictionary of named groups and its corresponding group number. Only groups with that were matched are included. If multiple groups have the same name, that name would refer to the first matching one.
+			A dictionary of named groups and its corresponding group number. Only groups that were matched are included. If multiple groups have the same name, that name would refer to the first matching one.
 		</member>
 		<member name="strings" type="Array" setter="" getter="get_strings" default="[  ]">
 			An [Array] of the match and its capturing groups.