Fix malformed icons, tidy a little text

I noticed the icons on this page were broken. Let's fix those, and
fix a couple of small text things while I'm here.

doc/user/project/wiki/index.md

@@ -73,11 +73,13 @@ to be used as your wiki's home page. To create it:
 
 ## Create a new wiki page
 
-Users with at least the Developer role can create new wiki pages:
+Prerequisites:
+
+- You must have at least the Developer role.
 
 1. On the left sidebar, select **Search or go to** and find your project or group.
 1. Select **Plan > Wiki**.
-1. Select **Wiki actions {ellipsis_v} > New page** on this page, or any other wiki page.
+1. Select **Wiki actions** **{ellipsis_v}** **> New page** on this page, or any other wiki page.
 1. Select a content format.
 1. Add a title for your new page. Page titles use
    [special characters](#special-characters-in-page-titles) for subdirectories and formatting,
@@ -96,7 +98,7 @@ locally:
 
 1. On the left sidebar, select **Search or go to** and find your project or group.
 1. Select **Plan > Wiki**.
-1. Select **Wiki actions {ellipsis_v} > Clone repository**.
+1. Select **Wiki actions** **{ellipsis_v}** **> Clone repository**.
 1. Follow the on-screen instructions.
 
 Files you add to your wiki locally must use one of the following
@@ -136,7 +138,9 @@ may not be able to check out the wiki locally afterward.
 
 ## Edit a wiki page
 
-You need at least the Developer role to edit a wiki page:
+Prerequisites:
+
+- You must have at least the Developer role.
 
 1. On the left sidebar, select **Search or go to** and find your project or group.
 1. Select **Plan > Wiki**.
@@ -199,7 +203,7 @@ You can export a wiki page as a PDF file:
 1. On the left sidebar, select **Search or go to** and find your project or group.
 1. Select **Plan > Wiki**.
 1. Go to the page you want to export.
-1. Select the vertical ellipsis (**{ellipsis_v}**), and then select **Print as PDF**.
+1. On the top right, select **Wiki actions** (**{ellipsis_v}**), then select **Print as PDF**.
 
 A PDF of the wiki page is created.
 
@@ -219,7 +223,7 @@ Prerequisites:
 
 1. On the left sidebar, select **Search or go to** and find your project or group.
 1. Select **Plan > Wiki**.
-1. Select **Wiki actions {ellipsis_v} > Templates**.
+1. Select **Wiki actions** **{ellipsis_v}** **> Templates**.
 1. Select **New Template**.
 1. Enter template title, format and content, as if creating a regular wiki page.