Fix some README issues

README.md

@@ -9,7 +9,7 @@ Writes to STDOUT by default; use `-o/--outfile <file>` to write to a `<file>` in
 The script has 2 flags controlling files generated:
 
 * `--regiondir <dir>`: If specified, also generate maps for each region and location,
-  writing them to files in <dir>. Off by default.
+  writing them to files in `<dir>`. Off by default.
 * `--html/--no-html`: Whether to generate (an) SVG file(s) or (an) html file(s),
   including logic for popups on clicks (currently half done). Makes html by default.
 
@@ -28,7 +28,7 @@ Examples of the four combinations:
 
 2 is intended to make a map for the main page, and for each Region, Subregion and Location page.
 
-3 is intended to be linked to and ~has~will have click-toggleable popups.
+3 is intended to be linked to and <s>has</s>will have click-toggleable popups.
 
 4 is an artifact of the above 3 and doesn't have intended use.
 
@@ -36,7 +36,7 @@ Examples of the four combinations:
 Options can be abbreviated per Getopt::Long
 
 <dl>
-  <dt> `--api-url`:</dt> <dd>Base URL of the wiki. Required.</dd>
+  <dt>--api-url:</dt><dd>Base URL of the wiki. Required.</dd>
 </dl>
 Template names. Defaults to MapRegion, MapSubregion, MapLocation, MapSite.
 <dl>