fix: embed captions in image figures

For more details:

https://carpentries.github.io/workbench/transition-guide.html#figures

refs #130

episodes/02-data_management.md

@@ -50,8 +50,8 @@ In your opinion, what can go wrong when you have poor data management? Write dow
 
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-![](fig/ew-data-loss.png){alt="A comic strip titled 'The four stages of data loss' and subtitled 'dealing with accidental deletion of months of hard-earned data' by PhD Comics. It's based on the common theory of five stages of grief. The first panel is labelled 'stage 1: denial' and shows a man sitting behind a computer. A thought bubble above his head reads 'I did not just erase all my data. I surely made a back-up somewhere'. The second panel is labelled 'stage 2: anger' and shows the man shaking his computer. A speech bubble above his head shows he is shouting 'you stupid piece of crap! Where's my data?!'. The third panel is labelled 'stage 3: depression'. It shows the man crying, the broken computer beside him. He thinks 'Why? Why me?'. The fourth and final panel is labelled 'stage 4: acceptance'. It shows the man coming to terms with what has happened. He says 'I'm never going to graduate'."}
-Source: PHD Comics. ["Four stages of data loss"](https://phdcomics.com/comics/archive.php/images/archive.php?comicid=382)
+![Source: PHD Comics. ["Four stages of data loss"](https://phdcomics.com/comics/archive.php/images/archive.php?comicid=382)](fig/ew-data-loss.png){alt="A comic strip titled 'The four stages of data loss' and subtitled 'dealing with accidental deletion of months of hard-earned data' by PhD Comics. It's based on the common theory of five stages of grief. The first panel is labelled 'stage 1: denial' and shows a man sitting behind a computer. A thought bubble above his head reads 'I did not just erase all my data. I surely made a back-up somewhere'. The second panel is labelled 'stage 2: anger' and shows the man shaking his computer. A speech bubble above his head shows he is shouting 'you stupid piece of crap! Where's my data?!'. The third panel is labelled 'stage 3: depression'. It shows the man crying, the broken computer beside him. He thinks 'Why? Why me?'. The fourth and final panel is labelled 'stage 4: acceptance'. It shows the man coming to terms with what has happened. He says 'I'm never going to graduate'."}
+
 
 ## Save the raw data
 

episodes/06-track_changes.md

@@ -19,8 +19,8 @@ exercises: 25
 
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-![](fig/ew-versions.png){alt='A comic strip  titled "final.doc" by PhD Comics. The first panel shows a student saving a document on their computer and naming the file "final.doc". The second panel shows their professor editing the document on a printed piece of paper. The third panel shows the student making the edits and naming the new document "final\_rev2.doc". The fourth to ninth panels go back and forth between the professor and the student, with increasingly complex file names. By the end the student is exasperated and hitting their head on their computer screen.'}
-*from: Wit and wisdom from Jorge Cham [PhDComics](https://phdcomics.com/comics/archive.php?comicid=1531)*
+![Source: PhD Comics. ["notFinal.doc"](https://phdcomics.com/comics/archive.php?comicid=1531)](fig/ew-versions.png){alt='A comic strip titled "final.doc" by PhD Comics. The first panel shows a student saving a document on their computer and naming the file "final.doc". The second panel shows their professor editing the document on a printed piece of paper. The third panel shows the student making the edits and naming the new document "final\_rev2.doc". The fourth to ninth panels go back and forth between the professor and the student, with increasingly complex file names. By the end the student is exasperated and hitting their head on their computer screen.'}
+
 
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