Fix comment typos in inc/ and tests/ directories

valu3 => value3
enviromnet => environment
direcotry => directory
virualenv => virtualenv
editiable => editable
envirnment => environment

Change-Id: I97fb2d44a37b16d02d4fbdb08bfa33414349f651
diff --git a/inc/ini-config b/inc/ini-config
index 42a66c6..d2830d7 100644
--- a/inc/ini-config
+++ b/inc/ini-config
@@ -205,7 +205,7 @@
 }
 
 # Set a multiple line option in an INI file
-# iniset_multiline [-sudo] config-file section option value1 value2 valu3 ...
+# iniset_multiline [-sudo] config-file section option value1 value2 value3 ...
 function iniset_multiline {
     local xtrace
     xtrace=$(set +o | grep xtrace)