add java doc for config method and a typo fix (#956)

* add java doc for a config method and a typo fix for method name

* improve added javadoc

Author: ankitsmt211

application/src/main/java/org/togetherjava/tjbot/config/Config.java

@@ -41,7 +41,7 @@ public final class Config {
     private final JShellConfig jshell;
     private final HelperPruneConfig helperPruneConfig;
     private final FeatureBlacklistConfig featureBlacklistConfig;
-    private final String selectRolesChannelPatten;
+    private final String selectRolesChannelPattern;
 
     @SuppressWarnings("ConstructorWithTooManyParameters")
     @JsonCreator(mode = JsonCreator.Mode.PROPERTIES)
@@ -85,7 +85,7 @@ private Config(@JsonProperty(value = "token", required = true) String token,
             @JsonProperty(value = "featureBlacklist",
                     required = true) FeatureBlacklistConfig featureBlacklistConfig,
             @JsonProperty(value = "selectRolesChannelPattern",
-                    required = true) String selectRolesChannelPatten) {
+                    required = true) String selectRolesChannelPattern) {
         this.token = Objects.requireNonNull(token);
         this.gistApiKey = Objects.requireNonNull(gistApiKey);
         this.databasePath = Objects.requireNonNull(databasePath);
@@ -113,7 +113,7 @@ private Config(@JsonProperty(value = "token", required = true) String token,
         this.jshell = Objects.requireNonNull(jshell);
         this.helperPruneConfig = Objects.requireNonNull(helperPruneConfig);
         this.featureBlacklistConfig = Objects.requireNonNull(featureBlacklistConfig);
-        this.selectRolesChannelPatten = Objects.requireNonNull(selectRolesChannelPatten);
+        this.selectRolesChannelPattern = Objects.requireNonNull(selectRolesChannelPattern);
     }
 
     /**
@@ -373,7 +373,13 @@ public FeatureBlacklistConfig getFeatureBlacklistConfig() {
         return featureBlacklistConfig;
     }
 
-    public String getSelectRolesChannelPatten() {
-        return selectRolesChannelPatten;
+    /**
+     * Gets the REGEX pattern used to identify the channel in which users can select their helper
+     * roles.
+     *
+     * @return the channel name pattern
+     */
+    public String getSelectRolesChannelPattern() {
+        return selectRolesChannelPattern;
     }
 }

application/src/main/java/org/togetherjava/tjbot/features/help/AutoPruneHelperRoutine.java

@@ -70,7 +70,7 @@ public AutoPruneHelperRoutine(Config config, HelpSystemHelper helper,
         inactiveAfter = Period.ofDays(helperPruneConfig.inactivateAfterDays());
         recentlyJoinedDays = helperPruneConfig.recentlyJoinedDays();
         selectYourRolesChannelNamePredicate =
-                Pattern.compile(config.getSelectRolesChannelPatten()).asMatchPredicate();
+                Pattern.compile(config.getSelectRolesChannelPattern()).asMatchPredicate();
     }
 
     @Override