Update CONTRIBUTING.md

docs/CONTRIBUTING.md

@@ -47,6 +47,7 @@ If it is attested in a different tradition, record it under the original author
 Follow OCD’s abbreviations.
 
 ### Philo
+<!-- The CSS will properly size the images once the page gets rendered into HTML. -->
 ![Philonic abbreviations, part 1](https://t18d.github.io/attested-conjectures/assets/290511383-00bd0375-06f1-4cae-b0f6-64188379966e.jpeg.webp)
 ![Philonic abbreviations, part 2](https://t18d.github.io/attested-conjectures/assets/290511838-72d71c5b-6d24-412f-8aa6-4dd9f9d927b3.jpeg.webp)
 
@@ -121,7 +122,7 @@ Enter ‘n.d.’ when a conjecture is considered undatable.
 
 For obscure critics, it would be helpful to indicate the period in which they flourished:
 
-<img src="https://t18d.github.io/attested-conjectures/assets/289861739-9c2261b1-1680-4726-a196-96c336063ef7.jpeg.webp" width="50%" />
+![Conventions of fuzzy dating](https://t18d.github.io/attested-conjectures/assets/289861739-9c2261b1-1680-4726-a196-96c336063ef7.jpeg.webp)
 
 ### Self-reported conjectures 
 Self-reported conjectures cannot be verified and are therefore excluded from this database.