CLEANUP: assorted typo fixes in the code and comments

This is fifth iteration of typo fixes
diff --git a/contrib/modsecurity/modsec_wrapper.c b/contrib/modsecurity/modsec_wrapper.c
index a3a2541..7ae831e 100644
--- a/contrib/modsecurity/modsec_wrapper.c
+++ b/contrib/modsecurity/modsec_wrapper.c
@@ -140,7 +140,7 @@
 
 	modsec_server = modsecInit();
 	if (modsec_server == NULL) {
-		LOG(&null_worker, "ModSecurity initilisation failed.\n");
+		LOG(&null_worker, "ModSecurity initialisation failed.\n");
 		return -1;
 	}
 
@@ -153,7 +153,7 @@
 
 	modsec_config = modsecGetDefaultConfig();
 	if (modsec_config == NULL) {
-		LOG(&null_worker, "ModSecurity default configuration initilisation failed.\n");
+		LOG(&null_worker, "ModSecurity default configuration initialisation failed.\n");
 		return -1;
 	}
 
diff --git a/contrib/modsecurity/spoa.c b/contrib/modsecurity/spoa.c
index 225db29..20916fd 100644
--- a/contrib/modsecurity/spoa.c
+++ b/contrib/modsecurity/spoa.c
@@ -197,7 +197,7 @@
 	DEBUG(frame->worker, "<%lu> Supported versions : %.*s",
 	      frame->client->id, (int)sz, str);
 
-	/* TODO: Find the right verion in supported ones */
+	/* TODO: Find the right version in supported ones */
 
 	ret  = (p - *buf);
 	*buf = p;