update image links

Author: jorisvandenbossche

_solved/00-jupyter_introduction.ipynb

@@ -60,7 +60,7 @@
    },
    "source": [
     "<big><center>To run a cell: push the start triangle in the menu or type **SHIFT + ENTER/RETURN**\n",
-    "![](../../img/shiftenter.jpg)"
+    "![](../img/shiftenter.jpg)"
    ]
   },
   {
@@ -342,7 +342,7 @@
    },
    "source": [
     "## Completion: TAB\n",
-    "![](../../img/tabbutton.jpg)"
+    "![](../img/tabbutton.jpg)"
    ]
   },
   {
@@ -422,7 +422,7 @@
    },
    "source": [
     "## Help: SHIFT + TAB\n",
-    "![](../../img/shift-tab.png)"
+    "![](../img/shift-tab.png)"
    ]
   },
   {
@@ -601,10 +601,10 @@
     "* *command* mode means you're NOT editing(!), i.e. NOT with your cursor inside a cell to type content --> <font color=\"blue\">blue colored side</font>\n",
     "\n",
     "To start editing, click inside a cell or \n",
-    "<img src=\"../../img/enterbutton.png\" alt=\"Key enter\" style=\"width:150px\">\n",
+    "<img src=\"../img/enterbutton.png\" alt=\"Key enter\" style=\"width:150px\">\n",
     "\n",
     "To stop editing,\n",
-    "<img src=\"../../img/keyescape.png\" alt=\"Key A\" style=\"width:150px\">"
+    "<img src=\"../img/keyescape.png\" alt=\"Key A\" style=\"width:150px\">"
    ]
   },
   {
@@ -616,7 +616,7 @@
    },
    "source": [
     "## new cell A-bove\n",
-    "<img src=\"../../img/keya.png\" alt=\"Key A\" style=\"width:150px\">\n",
+    "<img src=\"../img/keya.png\" alt=\"Key A\" style=\"width:150px\">\n",
     "\n",
     "Create a new cell above with the key A... when in *command* mode"
    ]
@@ -630,7 +630,7 @@
    },
    "source": [
     "## new cell B-elow\n",
-    "<img src=\"../../img/keyb.png\" alt=\"Key B\" style=\"width:150px\">\n",
+    "<img src=\"../img/keyb.png\" alt=\"Key B\" style=\"width:150px\">\n",
     "\n",
     "Create a new cell below with the key B... when in *command* mode"
    ]
@@ -718,7 +718,7 @@
    },
    "source": [
     "<big><center>**REMEMBER**: To run a cell: <strike>push the start triangle in the menu or</strike> type **SHIFT + ENTER**\n",
-    "![](../../img/shiftenter.jpg)"
+    "![](../img/shiftenter.jpg)"
    ]
   },
   {