Minor changes

README.md

@@ -9,26 +9,28 @@ This Python script generates a brain jogging PDF with math problems. The PDF con
 - argparse
 
 You can prepare the environment and install the reportlab library using pip:
-
+```
 python -m venv env
 source env/bin/activate
 python -m pip install --upgrade pip
 pip install reportlab
+```
+
 ## Usage
 
 You can run the script from the command line:
-
+```
-
 python brain-jogging.py [filename]  
+```
 
 ## Functions
 
 The script contains the following functions:
 
-- format_and_return(a, b, operation, result): Formats and returns a math problem string along with its result.
+- `format_and_return(a, b, operation, result)`: Formats and returns a math problem string along with its result.
-- generate_math_problem(): Generates a random math problem with an operation chosen from addition, subtraction, multiplication, or division.
+- `generate_math_problem()`: Generates a random math problem with an operation chosen from addition, subtraction, multiplication, or division.
-- create_brain_jogging_pdf(filename): Creates a brain jogging PDF with math problems and saves it to the specified filename.
+- `create_brain_jogging_pdf(filename)`: Creates a brain jogging PDF with math problems and saves it to the specified filename.
-- main(): The main function that parses command-line arguments and calls the create_brain_jogging_pdf() function with the provided arguments.
+- `main()`: The main function that parses command-line arguments and calls the `create_brain_jogging_pdf()` function with the provided arguments.
 
 
 ## License