docs: add icons for extensions

docs/api/extensions/bubble-menu.md

@@ -1,5 +1,6 @@
 ---
 description: Add a toolbar that pops up above the text to apply inline formatting easily.
+icon: chat-2-line
 ---
 
 # Bubble Menu

docs/api/extensions/collaboration-cursor.md

@@ -1,5 +1,6 @@
 ---
 description: See other user’s cursors and their name while they type.
+icon: account-pin-circle-line
 ---
 
 # CollaborationCursor

docs/api/extensions/collaboration.md

@@ -1,5 +1,6 @@
 ---
 description: Collaborative text editing can be fricking complex, so we made it different.
+icon: user-voice-line
 ---
 
 # Collaboration

docs/api/extensions/color.md

@@ -1,5 +1,6 @@
 ---
 description: Add text color support to your editor (comes with unlimited colors).
+icon: paint-brush-line
 ---
 
 # Color

docs/api/extensions/dropcursor.md

@@ -1,5 +1,6 @@
 ---
 description: Adds a cursor when something is dragged inside the editor.
+icon: drag-drop-line
 ---
 
 # Dropcursor

docs/api/extensions/floating-menu.md

@@ -1,5 +1,6 @@
 ---
 description: Make a toolbar appear automagically on empty lines.
+icon: menu-4-line
 ---
 
 # Floating Menu

docs/api/extensions/gapcursor.md

@@ -1,5 +1,6 @@
 ---
 description: The gapcursor makes sure the cursor doesn’t get stuck … in a gap.
+icon: space
 ---
 
 # Gapcursor

docs/api/extensions/history.md

@@ -1,5 +1,6 @@
 ---
 description: If I could just go back and make everything undone … you can.
+icon: history-line
 ---
 
 # History

docs/api/extensions/starter-kit.md

@@ -1,5 +1,6 @@
 ---
 description: All the popular extensions in a single extension, doesn’t get much better than this.
+icon: star-smile-line
 ---
 
 # StarterKit

docs/api/extensions/text-align.md

@@ -1,5 +1,6 @@
 ---
 description: Left, right, center, whatever! Align the text however you like.
+icon: align-left
 ---
 
 # TextAlign

docs/api/extensions/typography.md

@@ -1,5 +1,6 @@
 ---
 description: The typography smart ass for your editor, replaces everything that’s wrong.
+icon: text
 ---
 
 # Typography