CLEANUP: assorted typo fixes in the code and comments

This is 32nd iteration of typo fixes
diff --git a/scripts/make-releases-json b/scripts/make-releases-json
index 38bb2b6..ba05665 100755
--- a/scripts/make-releases-json
+++ b/scripts/make-releases-json
@@ -2,7 +2,7 @@
 #
 # Scan a branch directory for source tarballs and rebuild the releases.json
 # file for that branch. md5 and sha256 are added if present. The highest
-# numberred version is referenced as the latest release.
+# numbered version is referenced as the latest release.
 #
 # Usage: $0 [-b branch] [-o outfile] /path/to/download/branch
 #