Fix Perf typo (#3271)

Author: rviscomi

src/content/en/2022/performance.md

@@ -182,7 +182,7 @@ The second most popular LCP element type is `div`. This is a generic HTML contai
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-We see that 72% of mobile pages and 82% of desktop pages have images as their LCP. For example, these images may be traditional `img` elements or CSS background images.This suggests that the vast majority of the `div` elements seen in the previous figure are images as well. 26% of mobile pages and 17% of desktop pages have text-based content as their LCP.
+We see that 72% of mobile pages and 82% of desktop pages have images as their LCP. For example, these images may be traditional `img` elements or CSS background images. This suggests that the vast majority of the `div` elements seen in the previous figure are images as well. 26% of mobile pages and 17% of desktop pages have text-based content as their LCP.
 
 1% of pages actually use inline images as their LCP content. This is almost always a bad idea for a number of reasons, mostly around caching and complexity.