fix: 优化水质指标sheet名称

backend/src/main/java/com/yfd/platform/qgc_export/processor/CondProcessor.java

@@ -15,7 +15,7 @@ public class CondProcessor extends WqIndicatorProcessor {
 
     @Override
     public String getSheetName() {
-        return "电导率(μS/cm)";
+        return "水质(电导率)";
     }
 
     @Override

backend/src/main/java/com/yfd/platform/qgc_export/processor/DoxProcessor.java

@@ -15,7 +15,7 @@ public class DoxProcessor extends WqIndicatorProcessor {
 
     @Override
     public String getSheetName() {
-        return "溶解氧(mg/L)";
+        return "水质(溶解氧)";
     }
 
     @Override

backend/src/main/java/com/yfd/platform/qgc_export/processor/PhProcessor.java

@@ -15,7 +15,7 @@ public class PhProcessor extends WqIndicatorProcessor {
 
     @Override
     public String getSheetName() {
-        return "PH";
+        return "水质(PH)";
     }
 
     @Override

backend/src/main/java/com/yfd/platform/qgc_export/processor/TuProcessor.java

@@ -15,7 +15,7 @@ public class TuProcessor extends WqIndicatorProcessor {
 
     @Override
     public String getSheetName() {
-        return "浊度(NTU)";
+        return "水质(浊度)";
     }
 
     @Override

backend/src/main/java/com/yfd/platform/qgc_export/processor/WtmpProcessor.java

@@ -15,7 +15,7 @@ public class WtmpProcessor extends WqIndicatorProcessor {
 
     @Override
     public String getSheetName() {
-        return "水温(℃)";
+        return "水质(水温)";
     }
 
     @Override