fix typo: convert quote to backticks around "div"

Author: zburke

docs/rules/no-noninteractive-tabindex.md

@@ -20,7 +20,7 @@ The bare `<a>` tag is an _anchor_. It has no semantic AX API mapping in either A
 
 If we take a step back into the field of linguistics for a moment, let's consider what it means for something to be "semantic". Nothing, in and of itself, has meaning. Meaning is constructed through dialogue. A speaker intends a meaning and a listener/observer interprets a meaning. Each participant constructs their own meaning through dialogue. There is no intrinsic or isolated meaning outside of interaction. Thus, we must ask, given that we have a "speaker" who communicates via "semantic" HTML, who is listening/observing?
 
-In our case, the observer is the Accessibility (AX) API. Browsers interpret HTML (inflected at times by ARIA) to construct a meaning (AX Tree) of the page. Whatever the semantic HTML intends has only the force of suggestion to the AX API. Therefore, we have inconsistencies. For example, there is not yet an ARIA role for `text` or `label` and thus no way to change a `<label>` into plain text or a `<span>` into a label via ARIA. '<div>' has an AXObject correpondant `DivRole`, but no such object maps to `<span>`.
+In our case, the observer is the Accessibility (AX) API. Browsers interpret HTML (inflected at times by ARIA) to construct a meaning (AX Tree) of the page. Whatever the semantic HTML intends has only the force of suggestion to the AX API. Therefore, we have inconsistencies. For example, there is not yet an ARIA role for `text` or `label` and thus no way to change a `<label>` into plain text or a `<span>` into a label via ARIA. `<div>` has an AXObject correpondant `DivRole`, but no such object maps to `<span>`.
 
 What this lint rule endeavors to do is apply the AX API understanding of the semantics of an HTML document back onto your code. The concept of interactivity boils down to whether a user can do something with the indicated or focused component.