fix: add support for "in more detail"

Author: hippietrail

harper-core/src/linting/phrase_corrections.rs

@@ -621,6 +621,12 @@ pub fn lint_group() -> LintGroup {
             "Use singular `in detail` for referring to a detailed description.",
             "Correct unidiomatic plural `in details` to `in detail`."
         ),
+        "InMoreDetail" => (
+            ["in more details"],
+            ["in more detail"],
+            "Use singular `in more detail` for referring to a detailed description.",
+            "Correct unidiomatic plural `in more details` to `in more detail`."
+        ),
     });
 
     group.set_all_rules_to(Some(true));
@@ -863,6 +869,11 @@ mod tests {
         assert_suggestion_result("in details", lint_group(), "in detail");
     }
 
+    #[test]
+    fn in_more_detail_atomic() {
+        assert_suggestion_result("in more details", lint_group(), "in more detail");
+    }
+
     #[test]
     fn in_detail_real_world() {
         assert_suggestion_result(
@@ -871,4 +882,13 @@ mod tests {
             "c++ - who can tell me \"*this pointer\" in detail?",
         );
     }
+
+    #[test]
+    fn in_more_detail_real_world() {
+        assert_suggestion_result(
+            "Document the interface in more details · Issue #3 · owlbarn ...",
+            lint_group(),
+            "Document the interface in more detail · Issue #3 · owlbarn ...",
+        );
+    }
 }