Update spelling

Author: cmouse

.github/actions/spelling/allow.txt

@@ -4,30 +4,43 @@ bitmasks
 configurations
 DOkv
 ede
+fcf
+fuzzer
 github
+hardenings
 https
 iostream
 iostreams
 istream
 istreams
-ostream
-ostreams
-Postgre
-postgre
-postgres
 jvm
 JVM
 JVMs
+lfill
+libcap
+libpcre
+libstemmer
+libtextcat
+lto
+mharden
 mmaped
+ond
+onlinedocs
+ostream
+ostreams
 plugin
 plugins
+postgre
+Postgre
+postgres
+retpoline
+retuns
+rfill
+sls
 sni
 spnego
 ssh
+ubsan
 ubuntu
-workarounds
-lfill
-ond
-retuns
-rfill
 Uppercases
+workarounds