Added info on meta.json file in uploading_files doc

docs/tutorials/uploading_files.rst

@@ -1,12 +1,13 @@
 How to upload a file 
 --------------------------------------------------------------------------
 
-
+When uploading a file `FILE.XXX`, a `meta.json` file should be created in a folder named `FILE.file`, 
+specifying where the file is sent on Canvas.
 
 The `meta.json` file
 ====================
 
-Filenames and titles of files are distinct on canvas: 
+Filenames and titles of files are distinct on Canvas: 
 the latter is what you will see when the file is placed in a module, while the former is what is shown in the file structure.
 
 You can place a file in as many modules as you wish by specifying the modules in the `meta.json` file. 
@@ -16,7 +17,7 @@ If no module with the specified name exists, a module will be created to house t
 The `destination` key specifies where in the file structure you would like the file to be placed.
 
 Note that while a file cannot be simultaneously placed in multiple file structure locations using `meta.json`, if `meta.json` is updated, 
-the file will not automatically be deleted from any previous location unless that instance is specifically deleted.
+the file will **not** automatically be deleted from any previous location unless that instance is specifically deleted.
 
 
 Example
@@ -34,7 +35,7 @@ If the `meta.json` file looks like:
 	"destination": "course_info/syllabus_schedule"
     }
 
-then the file `F24_Math100_syllabus.pdf` will be put into two modules: `Course Information` and `Week 1`. 
+then the file in question will be named `F24_Math100_syllabus.pdf` and put into two modules: `Course Information` and `Week 1`. 
 Within these two modules, its title will appear to students as `Syllabus`. The file will be located in `course_info/syllabus_schedule`, 
 which will be created if it did not already exist.