CLEANUP: assorted typo fixes in the code and comments
This is 25th iteration of typo fixes
diff --git a/INSTALL b/INSTALL
index 447b9a0..cc5b894 100644
--- a/INSTALL
+++ b/INSTALL
@@ -178,7 +178,7 @@
regex engine which could be slow or even crash on certain patterns.
If you plan on importing a particularly heavy configuration involving a lot of
-regex, you may benefit from using some alternative regex implementations sur as
+regex, you may benefit from using some alternative regex implementations such as
PCRE. HAProxy natively supports PCRE and PCRE2, both in standard and JIT
flavors (Just In Time). The following options are available depending on the
library version provided on your system :