Fix typos in script

Author: ptomato

tools/generic_lib.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 # Make SpiderMonkey and this repo generic instead of version specific.
-# script shoud be run in mozjs dit with $1 for mason.build location
+# script shoud be run in mozjs dir with $1 for meson.build location
 sed -i 's/mozjs-$MOZILLA_SYMBOLVERSION/mozjs/g' old-configure.in
-sed -i --regexp-extended "s/dependency\(.mozjs.*$/dependency('mozjs')/gm" "$1"
+sed -i --regexp-extended "s/dependency\(.mozjs.*$/dependency('mozjs')/gm" "$1"