Update examples (#247)

Author: srmukher

apps/plotly_examples/src/data/data_019.json

@@ -32,7 +32,7 @@
     },
     {
       "type": "scatter",
-      "mode": "none",
+      "mode": "lines",
       "fill": "tonexty",
       "x": [
         "2023-01",

apps/plotly_examples/src/data/data_278_Education_Arabic.json

@@ -24,7 +24,7 @@
             }
         },
         {
-            "type": "scatter",
+            "type": "line",
             "mode": "markers",
             "x": [
                 "\u064a\u0646\u0627\u064a\u0631",

apps/plotly_examples/src/data/data_842.json

@@ -12,7 +12,8 @@
         "high"
       ],
       "type": "bar",
-      "name": "Metadata1"
+      "name": "Metadata1",
+      "mode": "lines+markers"
     },
     {
       "x": [
@@ -25,7 +26,8 @@
         "medium"
       ],
       "type": "bar",
-      "name": "Metadata2"
+      "name": "Metadata2",
+      "mode": "lines+markers"
     },
     {
       "x": [
@@ -39,7 +41,8 @@
         "high"
       ],
       "type": "scatter",
-      "name": "Supported Builds"
+      "name": "Supported Builds",
+      "mode": "lines+markers"
     },
     {
       "x": [
@@ -51,7 +54,8 @@
         "low"
       ],
       "type": "scatter",
-      "name": "Recommended Builds"
+      "name": "Recommended Builds",
+      "mode": "lines+markers"
     }
   ],
   "layout": {