fix: rename category "Coffee / Tea" to "Coffee" across recipes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

content/recipes/limeade/index.md

@@ -2,9 +2,9 @@
 title: "Limeade"
 date: "2026-01-01"
 draft: false
-description: "Limeade: a Other / Unknown served in a Highball glass. Made with Lime, Sugar, Soda water, Lime peel."
+description: "Limeade: a Other served in a Highball glass. Made with Lime, Sugar, Soda water, Lime peel."
 alcoholic: "Non alcoholic"
-categories: ["Other / Unknown"]
+categories: ["Other"]
 glasses: ["Highball glass"]
 ingredients: ["Lime", "Sugar", "Soda water", "Lime peel"]
 ingredientMeasures: ["Juice of 1 ", "1 tblsp ", " (seltzer water)