Typos a/an (#13876)

bundles/org.openhab.binding.opensprinkler/src/main/java/org/openhab/binding/opensprinkler/internal/api/OpenSprinklerHttpApiV210.java

@@ -164,7 +164,7 @@ class OpenSprinklerHttpApiV210 extends OpenSprinklerHttpApiV100 {
         switch (returnCode) {
             case -1:
                 throw new UnknownApiException(
-                        "The OpenSprinkler API returnd an result that was not parseable: " + returnContent);
+                        "The OpenSprinkler API returnd a result that was not parseable: " + returnContent);
             case 1:
                 return;
             case 2:

bundles/org.openhab.binding.opensprinkler/src/main/java/org/openhab/binding/opensprinkler/internal/util/Parse.java

@@ -112,7 +112,7 @@ public class Parse {
     }
 
     /**
-     * Parses an String array from a JSON string given its key name.
+     * Parses a String array from a JSON string given its key name.
      *
      * @param jsonData The JSON formatted string to parse from.
      * @param keyName The name of the object array to search through.