Typos

Author: AllenDowney

soln/chap07.ipynb

@@ -114863,7 +114863,7 @@
     "## Search\n",
     "\n",
     "Based on this simpler version of `has_e`, let's write a more general function called `uses_any` that takes a second parameter that is a string of letters.\n",
-    "If returns `True` if the word uses any of the letters and `False` otherwise."
+    "It returns `True` if the word uses any of the letters and `False` otherwise."
    ]
   },
   {
@@ -115172,7 +115172,7 @@
     " A variable used to count something, usually initialized to zero and then incremented.\n",
     "\n",
     "**linear search:**\n",
-    "A computational pattern that searches through a sequence of elements and stops what it finds what it is looking for.\n",
+    "A computational pattern that searches through a sequence of elements and stops when it finds what it is looking for.\n",
     "\n",
     "**pass:**\n",
     "If a test runs and the result is as expected, the test passes.\n",