Eli Zaretskii writes:

    Please note that the doc strings and the manual text included a few
    typos, and also used the passive tense too much.  See the follow-up
    changes I pushed after your changeset.  In the future, I suggest to
    use the Emacs spell-checking capabilities to spell-check the text in
    the manual and also the comments/strings in the C/Lisp sources.

Two more typos (if/of, inserts/insert):

diff --git a/doc/lispref/text.texi b/doc/lispref/text.texi
index 55f5269849..2e7c497f57 100644
--- a/doc/lispref/text.texi
+++ b/doc/lispref/text.texi
@@ -4560,8 +4560,8 @@ Base 64

 @deffn Command base64url-encode-region beg end &optional no-pad
 This function is like @code{base64-encode-region}, but it implements
-the URL variant if base 64 encoding, per RFC 4648, and it doesn't
-inserts newline characters into the encoded text, so the output is
+the URL variant of base 64 encoding, per RFC 4648, and it doesn't
+insert newline characters into the encoded text, so the output is
 just one long line.

 If the optional argument @var{no-pad} is non-@code{nil} then this