DOC: fix "successful" typo

s/succesfull/successful at a few places
diff --git a/scripts/run-regtests.sh b/scripts/run-regtests.sh
index ccfdd60..19e8a15 100755
--- a/scripts/run-regtests.sh
+++ b/scripts/run-regtests.sh
@@ -49,12 +49,12 @@
 
   Including text below into a .vtc file will check for its requirements
   related to haproxy's target and compilation options
-    # Below targets are not capable of completing this test succesfully
+    # Below targets are not capable of completing this test successfully
     #EXCLUDE_TARGET=freebsd, abns sockets are not available on freebsd
 
     #EXCLUDE_TARGETS=dos,freebsd,windows
 
-    # Below option is required to complete this test succesfully
+    # Below option is required to complete this test successfully
     #REQUIRE_OPTION=OPENSSL, this test needs OPENSSL compiled in.
 
     #REQUIRE_OPTIONS=ZLIB|SLZ,OPENSSL,LUA
@@ -355,7 +355,7 @@
 
 
 if [ $_vtresult -eq 0 ]; then
-  # all tests were succesfull, removing tempdir (the last part.)
+  # all tests were successful, removing tempdir (the last part.)
   # ignore errors is the directory is not empty or if it does not exist
    rmdir "$TESTDIR" 2>/dev/null
 fi