Add summary marker to blog pages

exampleSite/content/blog/code-shortcode.md

@@ -6,6 +6,10 @@ tags: [figures, shortcodes]
 title: Code Shortcode
 ---
 
+Paige provides a `paige/code` shortcode for displaying code.
+
+<!--more-->
+
 Code:
 
 ```go-text-template

exampleSite/content/blog/figure-shortcode.md

@@ -6,6 +6,10 @@ tags: [figures, shortcodes]
 title: Figure Shortcode
 ---
 
+Paige provides a `paige/figure` shortcode for displaying content.
+
+<!--more-->
+
 ## Basic
 
 Code:

exampleSite/content/blog/gallery-shortcode/index.md

@@ -6,6 +6,10 @@ tags: [figures, shortcodes]
 title: Gallery Shortcode
 ---
 
+Paige provides a `paige/gallery` shortcode for displaying a list of images.
+
+<!--more-->
+
 See the images in the example site to understand how the below file patterns work.
 Resize the viewport as narrow and wide as you can to see the responsiveness.
 

exampleSite/content/blog/image-shortcode.md

@@ -6,6 +6,10 @@ tags: [figures, shortcodes]
 title: Image Shortcode
 ---
 
+Paige provides a `paige/image` shortcode for displaying an image.
+
+<!--more-->
+
 Code:
 
 ```go-text-template

exampleSite/content/blog/quote-shortcode.md

@@ -6,6 +6,10 @@ tags: [figures, shortcodes]
 title: Quote Shortcode
 ---
 
+Paige provides a `paige/quote` shortcode for displaying a quotation.
+
+<!--more-->
+
 Code:
 
 ```go-text-template

exampleSite/content/blog/vimeo-shortcode.md

@@ -6,6 +6,10 @@ tags: [shortcodes, videos]
 title: Vimeo Shortcode
 ---
 
+Paige provides a `paige/vimeo` shortcode for playing Vimeo videos.
+
+<!--more-->
+
 ## Basic
 
 Code:

exampleSite/content/blog/youtube-shortcode.md

@@ -6,6 +6,10 @@ tags: [shortcodes, videos]
 title: YouTube Shortcode
 ---
 
+Paige provides a `paige/youtube` shortcode for playing YouTube videos.
+
+<!--more-->
+
 Code:
 
 ```go-text-template