anchor .gitignore patterns

This is to fix log/ matching files with "log" as part of their name.

.gitignore

@@ -1,23 +1,23 @@
 # Managed by modulesync - DO NOT EDIT
 # https://voxpupuli.org/docs/updating-files-managed-with-modulesync/
 
-pkg/
-Gemfile.lock
-Gemfile.local
-vendor/
-.vendor/
-spec/fixtures/manifests/
-spec/fixtures/modules/
-.vagrant/
-.bundle/
-.ruby-version
-coverage/
-log/
-.idea/
-.dependencies/
-.librarian/
-Puppetfile.lock
+/pkg/
+/Gemfile.lock
+/Gemfile.local
+/vendor/
+/.vendor/
+/spec/fixtures/manifests/
+/spec/fixtures/modules/
+/.vagrant/
+/.bundle/
+/.ruby-version
+/coverage/
+/log/
+/.idea/
+/.dependencies/
+/.librarian/
+/Puppetfile.lock
 *.iml
 .*.sw?
-.yardoc/
-Guardfile
+/.yardoc/
+/Guardfile