rn-53: improve quoting shell comments

Author: chriscool

rev_news/drafts/edition-53.md

@@ -62,34 +62,34 @@ This edition covers what happened during the month of June 2019.
 
  The comments above the function explains it like this:
 
-```sh
-# Similar to test_commit, but efficiently create <nr> commits, each with a
-# unique number $n (from 1 to <nr> by default) in the commit message.
-#
-# Usage: test_commit_bulk [options] <nr>
-# -C <dir>:
-# Run all git commands in directory <dir>
-# --ref=<n>:
-# ref on which to create commits (default: HEAD)
-# --start=<n>:
-# number commit messages from <n> (default: 1)
-# --message=<msg>:
-# use <msg> as the commit mesasge (default: "commit $n")
-# --filename=<fn>:
-# modify <fn> in each commit (default: $n.t)
-# --contents=<string>:
-# place <string> in each file (default: "content $n")
-# --id=<string>:
-# shorthand to use <string> and $n in message, filename, and contents
-#
-# The message, filename, and contents strings are evaluated by the shell inside
-# double-quotes, with $n set to the current commit number. So you can do:
-#
-# test_commit_bulk --filename=file --contents='modification $n'
-#
-# to have every commit touch the same file, but with unique content. Spaces are
-# OK, but you must escape any metacharacters (like backslashes or
-# double-quotes) you do not want expanded.
+```
+# Similar to test_commit, but efficiently create <nr> commits, each with a
+# unique number $n (from 1 to <nr> by default) in the commit message.
+#
+# Usage: test_commit_bulk [options] <nr>
+# -C <dir>:
+# Run all git commands in directory <dir>
+# --ref=<n>:
+# ref on which to create commits (default: HEAD)
+# --start=<n>:
+# number commit messages from <n> (default: 1)
+# --message=<msg>:
+# use <msg> as the commit mesasge (default: "commit $n")
+# --filename=<fn>:
+# modify <fn> in each commit (default: $n.t)
+# --contents=<string>:
+# place <string> in each file (default: "content $n")
+# --id=<string>:
+# shorthand to use <string> and $n in message, filename, and contents
+#
+# The message, filename, and contents strings are evaluated by the shell inside
+# double-quotes, with $n set to the current commit number. So you can do:
+#
+# test_commit_bulk --filename=file --contents='modification $n'
+#
+# to have every commit touch the same file, but with unique content. Spaces are
+# OK, but you must escape any metacharacters (like backslashes or
+# double-quotes) you do not want expanded.
 ```
 
  Johannes Schindelin replied to Peff that he likes the direction