ci: update rumdl config

Author: chrisgrieser

.rumdl.toml

@@ -5,8 +5,6 @@ line-length = 80
 disable = [
   "MD032",  # blanks-around-lists: space waster
 ]
-# PENDING https://github.com/rvben/rumdl/issues/208
-exclude = [".github/pull_request_template.md"]
 
 # ------------------------------------------------------------------------------
 
@@ -36,6 +34,9 @@ style = "asterisk"  # better than underscore, since it's not considered a word-c
 [MD050]  # strong-style
 style = "asterisk"  # better than underscore, since it's not considered a word-char
 
+[MD060]  # auto-format tables
+enabled = true  # opt-in, since rule still experimental
+
 [MD063]  # heading-capitalization
 style = "sentence_case"