Update repo2docker/buildpacks/julia/julia_semver.py
# Versioning) strings in .toml files.
#
# It uses the python "semver" package to do most version string comparisons, but
-# the places where julia's SemVer handling differes from the semver package have
+# the places where julia's SemVer handling differs from the semver package have
# been implemented directly.
#
# Here, we use tuples to represent a Version, and functors as "matchers". The matcher
