Fix some issues introduced with #269

* Fix perSectionDepth value range
* Fix perSectionDepth not being initialize with documented default.

conf/v5/schema.json

@@ -558,7 +558,7 @@
                         ,"perSectionDepth": {
                             "type": "number"
                             ,"description": "When there are ambiguous terms in a book one glossary term definition might be more appropriate in a section A while another definition for the same term may be more appropriate in a section B. glossary-ref-count' can prioritize term definitions separately per section by counting term usage individually per sections at level `perSectionDepth` but not for their subsections deeper than `perSectionDepth`."
-                            ,"min": 1
+                            ,"min": 0
                             ,"max": 6
                             ,"default": 2
                             ,"more": "https://github.com/about-code/glossarify-md/blob/master/doc/ambiguities.md"

lib/model/context.js

@@ -57,6 +57,10 @@ class Context {
         if (Math.abs(altLinks) > 95) {
             conf_.linking.limitByAlternatives = Math.sign(altLinks) * 95;
         }
+        const sortAlternatives = conf_.linking.sortAlternatives;
+        if (sortAlternatives.by === "glossary-ref-count") {
+            conf_.linking.sortAlternatives = { perSectionDepth: 2, ...sortAlternatives };
+        }
         if (conf.generateFiles.listOfFigures) {
             conf_.generateFiles.listOfFigures = { class: "figure", title: "Figures", ...conf.generateFiles.listOfFigures };
             conf_.generateFiles.listOf.push(conf.generateFiles.listOfFigures);
@@ -68,6 +72,7 @@ class Context {
         if (conf_.unified.rcPath) {
             conf_.unified.rcPath = toForwardSlash(path.resolve(conf.baseDir, conf.unified.rcPath));
         }
+
     }
 
     resolvePath(relativePath) {