fix: grammatical errors in template-syntax.md (#1421)

* Add missing period and change "a" to "an"

* fix: change "interprets" to "interpret"

Since "mustaches" is plural, the verb "to interpret" must also be conjugated in its plural form.

Author: seafoamteal

src/guide/template-syntax.md

@@ -26,7 +26,7 @@ You can also perform one-time interpolations that do not update on data change b
 
 ### Raw HTML
 
-The double mustaches interprets the data as plain text, not HTML. In order to output real HTML, you will need to use the [`v-html` directive](../api/directives.html#v-html):
+The double mustaches interpret the data as plain text, not HTML. In order to output real HTML, you will need to use the [`v-html` directive](../api/directives.html#v-html):
 
 ```html
 <p>Using mustaches: {{ rawHtml }}</p>
@@ -38,7 +38,7 @@ The double mustaches interprets the data as plain text, not HTML. In order to ou
 The contents of the `span` will be replaced with the value of the `rawHtml` property, interpreted as plain HTML - data bindings are ignored. Note that you cannot use `v-html` to compose template partials, because Vue is not a string-based templating engine. Instead, components are preferred as the fundamental unit for UI reuse and composition.
 
 ::: tip
-Dynamically rendering arbitrary HTML on your website can be very dangerous because it can easily lead to [XSS vulnerabilities](https://en.wikipedia.org/wiki/Cross-site_scripting). Only use HTML interpolation on trusted content and **never** on user-provided content
+Dynamically rendering arbitrary HTML on your website can be very dangerous because it can easily lead to [XSS vulnerabilities](https://en.wikipedia.org/wiki/Cross-site_scripting). Only use HTML interpolation on trusted content and **never** on user-provided content.
 :::
 
 ### Attributes
@@ -145,7 +145,7 @@ You'll see other examples of modifiers later, [for `v-on`](events.md#event-modif
 
 ## Shorthands
 
-The `v-` prefix serves as a visual cue for identifying Vue-specific attributes in your templates. This is useful when you are using Vue.js to apply dynamic behavior to some existing markup, but can feel verbose for some frequently used directives. At the same time, the need for the `v-` prefix becomes less important when you are building a [SPA](https://en.wikipedia.org/wiki/Single-page_application), where Vue manages every template. Therefore, Vue provides special shorthands for two of the most often used directives, `v-bind` and `v-on`:
+The `v-` prefix serves as a visual cue for identifying Vue-specific attributes in your templates. This is useful when you are using Vue.js to apply dynamic behavior to some existing markup, but can feel verbose for some frequently used directives. At the same time, the need for the `v-` prefix becomes less important when you are building an [SPA](https://en.wikipedia.org/wiki/Single-page_application), where Vue manages every template. Therefore, Vue provides special shorthands for two of the most often used directives, `v-bind` and `v-on`:
 
 ### `v-bind` Shorthand