[MultiQubitSystemMeasurements] Fix typo in task 7 (#846)

Co-authored-by: hyehyeon.kim <hyehyeon.kim@samsungmedison.com>

Author: delight1019

tutorials/MultiQubitSystemMeasurements/MultiQubitSystemMeasurements.ipynb

@@ -483,7 +483,7 @@
     "2. An integer $ind$ which is either $0$ or $1$.\n",
     "\n",
     "**Goal**: \n",
-    "- If $ind$ equals 0, the state of the state of the second qubit should be $a|0\\rangle + b|1\\rangle$\n",
+    "- If $ind$ equals 0, the state of the second qubit should be $a|0\\rangle + b|1\\rangle$\n",
     "- If $ind$ equals 1, the state of the second qubit should be $b|0\\rangle + a |1\\rangle$. \n",
     "\n",
     "The state of the first qubit at the end does not matter."

tutorials/MultiQubitSystemMeasurements/Workbook_MultiQubitSystemMeasurements.ipynb

@@ -486,7 +486,7 @@
     "2. An integer $ind$ which is either $0$ or $1$.\n",
     "\n",
     "**Goal**: \n",
-    "- If $ind$ equals 0, the state of the state of the second qubit should be $a|0\\rangle + b|1\\rangle$\n",
+    "- If $ind$ equals 0, the state of the second qubit should be $a|0\\rangle + b|1\\rangle$\n",
     "- If $ind$ equals 1, the state of the second qubit should be $b|0\\rangle + a |1\\rangle$. \n",
     "\n",
     "The state of the first qubit at the end does not matter."