Update contributing guide, fix minor documentation errors.

CONTRIBUTING.md

@@ -12,14 +12,14 @@ Please read this guide before making any contributions.
 The feedback should be submitted by creating an issue on [GitHub issues](https://github.com/idealo/image-dedup/issues).
 Select the related template (bug report, feature request, or custom) and add the corresponding labels.
 
-#### Fix Bugs:
+#### Fix Bugs
 You may look through the [GitHub issues](https://github.com/idealo/image-dedup/issues) for bugs.
 
 #### Implement Features
 You may look through the [GitHub issues](https://github.com/idealo/image-dedup/issues) for feature requests.
 
 ## Pull Requests (PR)
-1. Fork the repository and create a new branch from the master branch.
+1. Fork the repository and create a new branch from the `dev` branch.
 2. For bug fixes, add new tests and for new features, please add changes to the documentation.
 3. Do a PR from your new branch to our `dev` branch of the original Imagededup repo.
 

mkdocs/docs/user_guide/finding_duplicates.md

@@ -149,9 +149,7 @@ The 'method-name' corresponds to one of the deduplication methods available and
 
 - *encoding_map*: Optional, used instead of image_dir attribute. Set it equal to the dictionary of file names and 
 corresponding encodings (hashes/cnn encodings). The mentioned dictionary can be generated using the corresponding 
-[*encode_images*](encoding_generation.md) method. Each key in the 'duplicates' dictionary corresponds to a file in the image directory passed to 
-the image_dir parameter of the find_duplicates function. The value is a list of all tuples representing the file names 
-and corresponding scores in the image directory that were found to be duplicates for the key file.
+[*encode_images*](encoding_generation.md) method.
 
 - *outfile*: Name of file to which the returned duplicates dictionary is to be written, must be a json. *None* by default.