[BUGFIX] Fix property names

Author: n.kloeffel

Resources/Private/Solr/configsets/ext_solr_13_0_0/conf/solrconfig.xml

@@ -476,8 +476,8 @@
 					<str name="hl.bs.type">SENTENCE</str>
 					<!-- language and country are used when constructing Locale object.  -->
 					<!-- And the Locale object will be used when getting instance of BreakIterator -->
-					<str name="hl.bs.language">${solr.core.langcode}</str>
-					<str name="hl.bs.country">${solr.core.country}</str>
+					<str name="hl.bs.language">${hl.bs.language}</str>
+					<str name="hl.bs.country">${hl.bs.country}</str>
 				</lst>
 			</boundaryScanner>
 		</highlighting>

Resources/Private/Solr/cores/english/core.properties

@@ -2,5 +2,5 @@ configSet=ext_solr_13_0_0
 schema=english/schema.xml
 name=core_en
 dataDir=../../data/english
-langcode=en
-country=US
+hl.bs.language=en
+hl.bs.country=US

Resources/Private/Solr/cores/german/core.properties

@@ -2,5 +2,5 @@ configSet=ext_solr_13_0_0
 schema=german/schema.xml
 name=core_de
 dataDir=../../data/german
-langcode=de
-country=DE
+hl.bs.language=de
+hl.bs.country=DE