Escape double quotes in figure captions

Fixes https://github.com/kaushalmodi/ox-hugo/issues/190.

ox-hugo.el

@@ -1881,7 +1881,9 @@ and rewrite link paths to make blogging more seamless."
                                          useful-parent info
                                          nil #'org-html--has-caption-p))
                                 " "     ;" </span>"
-                                caption))))
+                                ;; Escape the double-quotes, if any,
+                                ;; present in the caption.
+                                (replace-regexp-in-string "\"" "\\\\\"" caption)))))
         ;; (message "[ox-hugo-link DBG] inline image? %s\npath: %s"
         ;;          inline-image path)
         ;; (message "[org-hugo-link DBG] attr: %s num of attr: %d"

test/site/content-org/all-posts.org

@@ -204,7 +204,7 @@ This is an inline non-hyperlinked image with the width attribute:
 :END:
 Some text before image.
 
-#+caption: A unicorn!
+#+caption: A unicorn! "Something in double quotes"
 [[/images/org-mode-unicorn-logo.png]]
 
 Some more text, after image.

test/site/content/posts/figure-shortcode-and-attr-html.md

@@ -38,7 +38,7 @@ below image, caption is set using that:
 
 Some text before image.
 
-{{< figure src="/images/org-mode-unicorn-logo.png" caption="Figure 1: A unicorn!" >}}
+{{< figure src="/images/org-mode-unicorn-logo.png" caption="Figure 1: A unicorn! \"Something in double quotes\"" >}}
 
 Some more text, after image.
 

test/site/content/posts/image-captions.md

@@ -7,6 +7,6 @@ draft = false
 
 Some text before image.
 
-{{< figure src="/images/org-mode-unicorn-logo.png" caption="Figure 1: A unicorn!" >}}
+{{< figure src="/images/org-mode-unicorn-logo.png" caption="Figure 1: A unicorn! \"Something in double quotes\"" >}}
 
 Some more text, after image.