make requirements key the filename

data/recfiles/bibliography.md

@@ -1,7 +1,7 @@
 ---
 title: "Recfile Bibliography for TeX"
 tags: [ "data", "database", "recfiles", "tex" ]
-requires: [ "Recfiles", "TeX", "Makefile" ]
+requires: [ "recfiles", "tex", "makefiles" ]
 ---
 
 Store your bibliography in a `recfile` database, then extract any part with `make`.

data/recfiles/board_games.md

@@ -1,7 +1,7 @@
 ---
 title: "Board Games with Recfiles"
 tags: [ "data", "recfiles", "games" ]
-requires: "Recfiles"
+requires: "recfiles"
 ---
 
 You can play with a board games database from boardgamegeek.com.

data/recfiles/nginx_logs.md

@@ -1,7 +1,7 @@
 ---
 title: "nginx logs with recfiles"
 tags: [ "data", "recfiles", "logs" ]
-requires: [ "Recfiles", "nginx" ]
+requires: [ "recfiles", "nginx" ]
 ---
 
 The standard `nginx` log format has such a lack of consistency or meaning that you might squint your face into a whirlpool making sense of them:

data/recfiles/recfixes.md

@@ -1,7 +1,7 @@
 ---
 title: "Recfixes"
 tags: [ "data", "recfiles" ]
-requires: "Recfiles"
+requires: "recfiles"
 ---
 
 Sometimes `recsel` chokes on a large query, and you need to break the query into chunks with a pipe.