Add recommendations about max_iter and PR

Author: MariBax

week1/week1-MultilabelClassification.ipynb

@@ -728,7 +728,9 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Train the classifiers for different data transformations: *bag-of-words* and *tf-idf*."
+    "Train the classifiers for different data transformations: *bag-of-words* and *tf-idf*.\n",
+    "\n",
+    "If you receive a convergence warning, please set parameter *max_iter* in LogisticRegression to a larger value (the default is 100)."
    ]
   },
   {
@@ -1030,7 +1032,9 @@
    "metadata": {},
    "source": [
     "### Authorization & Submission\n",
-    "To submit assignment parts to Cousera platform, please, enter your e-mail and token into variables below. You can generate token on this programming assignment page. <b>Note:</b> Token expires 30 minutes after generation."
+    "To submit the assignmnent to Cousera platform, please, enter your e-mail and token into variables below. You can generate the token on this programming assignment page. <b>Note:</b> The token expires 30 minutes after generation.\n",
+    "\n",
+    "Please, submit your solutions for the assignments **only** to Coursera platform, **do not create a Pull request on Github**."
    ]
   },
   {