depends: fix typos

depends/funcs.mk

@@ -205,7 +205,7 @@ endef
 # These functions create the build targets for each package. They must be
 # broken down into small steps so that each part is done for all packages
 # before moving on to the next step. Otherwise, a package's info
-# (build-id for example) would only be avilable to another package if it
+# (build-id for example) would only be available to another package if it
 # happened to be computed already.
 
 #set the type for host/build packages.