Update image call (timescale#2549)

Author: Loquacity

use-timescale/compression/about-compression.md

@@ -161,9 +161,9 @@ shown in this illustration, as active chunks age, they become compression
 candidates, and are eventually compressed when they become old enough according
 to the compression policy.
 
-<img
-class="main-content__illustration" src="https://s3.amazonaws.com/assets.timescale.com/docs/images/compression_diagram.webp"alt="Compression>
-timeline"/>
+<img class="main-content__illustration"
+src="https://s3.amazonaws.com/assets.timescale.com/docs/images/compression_diagram.webp"
+alt="Compression timeline" />
 
 ## Segment by columns