Fix unrendered Markdown (#35348)

files/en-us/web/accessibility/understanding_wcag/operable/index.md

@@ -50,7 +50,7 @@ This guideline covers the necessity of making core website functionality availab
       <td>
         <p>
           When entering a section of functionality using the keyboard, you
-          should be able to get out of that section again using *only* the
+          should be able to get out of that section again using <em>only</em> the
           keyboard. For example, if you press <kbd>Enter</kbd>/<kbd>Return</kbd>
           on a focused button to open an options window, you should be able to
           close that window again and return to the main content using the

files/en-us/web/api/canvasrenderingcontext2d/arc/index.md

@@ -60,8 +60,8 @@ This example draws a complete circle with the `arc()` method.
 #### JavaScript
 
 The arc is given an x-coordinate of 100, a y-coordinate of 75, and a radius of 50. To
-make a full circle, the arc begins at an angle of 0 radians (0**°**), and
-ends at an angle of 2π radians (360**°**).
+make a full circle, the arc begins at an angle of 0 radians (0°), and
+ends at an angle of 2π radians (360°).
 
 ```js
 const canvas = document.querySelector("canvas");

files/en-us/web/api/canvasrenderingcontext2d/ellipse/index.md

@@ -55,9 +55,9 @@ None ({{jsxref("undefined")}}).
 
 ### Drawing a full ellipse
 
-This example draws an ellipse at an angle of π/4 radians (45**°**). To
-make a full ellipse, the arc begins at an angle of 0 radians (0**°**), and
-ends at an angle of 2π radians (360**°**).
+This example draws an ellipse at an angle of π/4 radians (45°). To
+make a full ellipse, the arc begins at an angle of 0 radians (0°), and
+ends at an angle of 2π radians (360°).
 
 #### HTML
 

files/en-us/web/html/microformats/index.md

@@ -8,8 +8,8 @@ page-type: guide
 
 [_Microformats_](https://microformats.org/) are standards used to embed semantics and structured data in HTML, and provide an API to be used by social web applications, search engines, aggregators, and other tools. These minimal patterns of HTML are used for marking up entities that range from fundamental to domain-specific information, such as people, organizations, events, and locations.
 
-- To create a microformats object, h-\* class names are used in the class attribute.
-- To add a property to an object, the p-\*, u-\*, dt-\*, e-\* class names are used on one of the object's descendants.
+- To create a microformats object, `h-*` class names are used in the class attribute.
+- To add a property to an object, the `p-*`, `u-*`, `dt-*`, `e-*` class names are used on one of the object's descendants.
 
 Microformats use supporting vocabularies to describe objects and name-value pairs to assign values to their properties. The properties are carried in class attributes that can be added to any HTML element, while the data values re-use HTML element content and semantic attributes.