docs(credentials_searches): replace single quotes for backticks

subjects/devops/credentials_searches/README.md

@@ -4,17 +4,17 @@
 
 Create a file `credentials_searches.py` that contains a function `credentials_search` which takes no parameters and searches for the keys `password` and `secret` in a file called `logs.json`.
 
-- If both keys are found, the function should create a new json file named 'credentials.json' and save the values of those keys in it.
+- If both keys are found, the function should create a new json file named `credentials.json` and save the values of those keys in it.
 
-- If only one of the keys is found, the function should create a new json file named 'credentials.json' and save the value of that key in it.
+- If only one of the keys is found, the function should create a new json file named `credentials.json` and save the value of that key in it.
 
-- If neither key is found, the function should not create the 'credentials.json' file.
+- If neither key is found, the function should not create the `credentials.json` file.
 
-- If the 'logs.json' file is empty or is not a json file, the function should not create the 'credentials.json' file.
+- If the `logs.json` file is empty or is not a json file, the function should not create the `credentials.json` file.
 
-- If the 'logs.json' file does not exist, the function should not create the 'credentials.json' file.
+- If the `logs.json` file does not exist, the function should not create the `credentials.json` file.
 
-- If the keys are found in a nested object, the function should create the 'credentials.json' file and save the values of the keys in it.
+- If the keys are found in a nested object, the function should create the `credentials.json` file and save the values of the keys in it.
 
 ### Usage
 
@@ -47,13 +47,13 @@ Your function should generate this file `credentials.json`:
 
 ### Hints
 
-- The json module can be used to read and write JSON files.
+- The `json` module can be used to read and write JSON files.
 
-- The os module can be used to check if a file exists and remove a file.
+- The `os` module can be used to check if a file exists and remove a file.
 
-- Remember that the function should be able to search for the keys password and secret in nested json objects.
+- Remember that the function should be able to search for the keys `password` and `secret` in nested json objects.
 
-- Using the isinstance function could be useful to check if a value is for example a dict.
+- Using the `isinstance` function could be useful to check if a value is for example a dict.
 
 ### References