Including simple comments

Author: ricardohsmello

java/100_aggregation_pipeline_match.ipynb

@@ -115,7 +115,6 @@
     "AggregateIterable<Document> result = books.aggregate(aggregationPipeline);\n",
     "\n",
     "// Iterate through the results\n",
-    "\n",
     "for (Document doc : result) {\n",
     "    System.out.println(\"book: \" + doc.toJson());\n",
     "}"
@@ -156,6 +155,7 @@
     "\n",
     "AggregateIterable<Document> result = books.aggregate(aggregationPipeline);\n",
     "\n",
+    "// Iterate through the results\n",
     "for (Document doc : result) {\n",
     "    System.out.println(\"book: \" + doc.toJson());\n",
     "}\n"
@@ -190,6 +190,7 @@
     "\n",
     "AggregateIterable<Document> result = books.aggregate(aggregationPipeline);\n",
     "\n",
+    "// Iterate through the results\n",
     "for (Document doc : result) {\n",
     "    System.out.println(\"book: \" + doc.toJson());\n",
     "}"
@@ -240,6 +241,7 @@
     "\n",
     "AggregateIterable<Document> result = books.aggregate(aggregationPipeline);\n",
     "\n",
+    "// Iterate through the results\n",
     "for (Document doc : result) {\n",
     "    System.out.println(\"book: \" + doc.toJson());\n",
     "}"

java/101_aggregation_pipeline_arrays.ipynb

@@ -99,12 +99,12 @@
    "id": "handled-symbol",
    "metadata": {},
    "source": [
-    "### $match: $all\n",
+    "### $match with the `$all` operator\n",
     "\n",
     "[arrays-reference](\n",
     "https://mongodb-developer.github.io/aggregation-pipeline-lab/docs/using-arrays/simple-match-array)\n",
     "\n",
-    "If you want to find books whose `genres` array contains both \"Family Life\" and \"Fiction\", in any order, use:"
+    "If you want to find books whose `genres` array contains both `\"Family Life\"` and `\"Fiction\"`, in any order, use:"
    ]
   },
   {