Merge pull request LibraryCarpentry#270 from exn297/patch-2

Update 02-importing-data.md

_episodes/02-importing-data.md

@@ -37,7 +37,7 @@ keypoints:
 >5. Ensure the first row is used to create the column headings by checking the box `Parse next 1 line(s) as column headers`
 >6. OpenRefine will automatically select “Use character” to enclose cells containing column separators (such as a comma) as part of their data. This will make sure that OpenRefine doesn't misinterpret any commas (or other characters) within the column data as a delimiter. Keep this option selected.
 >7. From OpenRefine 3.4 onwards there is an option to Trim leading & trailing whitespace from strings when importing separator-based files. Keeping this checked will ensure that values like `English` and `English `, which differ by a single trailing space, are not treated as different values after the import
->8. Make sure the `Attempt to parse cell text into numbers` box is not checked, so OpenRefine doesn't try to automatically detect numbers as it may cause errors such as confusion between date formats (e.g. DD/MM/YYYY vs MM/DD/YYYY)
+>8. Make sure the `Attempt to parse cell text into numbers` box is not checked, so OpenRefine doesn't try to automatically detect numbers because this could cause errors such as confusion between date formats (e.g. DD/MM/YYYY vs MM/DD/YYYY).
 >9. The Project Name box in the upper right corner will default to the title of your imported file. Click in the `Project Name` box to give your project a different name, if desired.
 >10. Once you have selected the appropriate options for your project, click the `Create project »` button at the top right of the screen. This will create the project and open it for you. Projects are saved as you work on them, there is no need to save copies as you go along.
 >