Fix some typos

.gitignore

@@ -1,2 +1,5 @@
 __pycache__/
 .vscode
+*.iml
+.idea/codeStyles/Project.xml
+*.xml

CONTRIBUTING.md

@@ -8,7 +8,7 @@ Here's what you can do to help:
 - Be part of the discussion by helping out with [existing issues](https://github.com/kriadmin/30-seconds-of-python-code/issues) or talking on our [gitter channel](https://gitter.im/30-seconds-of-python-code/Lobby).
 - Submit [pull requests](https://github.com/kriadmin/30-seconds-of-python-code/pulls) with snippets you have created (see below for guidelines).
 - Fix typos in existing snippets, improve snippet descriptions and explanations or provide better examples.
-- Before submitting a PR for any new snippets go through [this](https://github.com/kriadmin/30-seconds-of-python-code/projects/1) project. If your snippet is not there, then go ahead and submit a PR. Else if it is in the done column, sorry it has been already implemented.If it is in any other column submit a PR and give the card's link in the description section of PR.
+- Before submitting a PR for any new snippets go through [this](https://github.com/kriadmin/30-seconds-of-python-code/projects/1) project. If your snippet is not there, then go ahead and submit a PR. Else if it is in the done column, sorry it has been already implemented. If it is in any other column submit a PR and give the card's link in the description section of PR.
 - **Working on your first Pull Request?** You can learn how from this *free* series [How to Contribute to an Open Source Project on GitHub](https://egghead.io/series/how-to-contribute-to-an-open-source-project-on-github)
 
 ### Snippet submission and Pull request guidelines

snippets/capitalize.md

@@ -2,7 +2,7 @@
 
 Capitalizes the first letter of a string.
 
-Capitalizes the fist letter of the sring and then adds it with rest of the string. Omit the `lower_rest` parameter to keep the rest of the string intact, or set it to `true` to convert to lowercase.
+Capitalizes the first letter of the string and then adds it with rest of the string. Omit the `lower_rest` parameter to keep the rest of the string intact, or set it to `true` to convert to lowercase.
 
 ```python
 def capitalize(string, lower_rest=False):

snippets/capitalize_every_word.md

@@ -2,7 +2,7 @@
 
 Capitalizes the first letter of every word in a string.
 
-Uses `str.title` to capitalize first letter of evry word in the string.
+Uses `str.title` to capitalize first letter of every word in the string.
 
 ```python
 def capitalize_every_word(string):

snippets/decapitalize.md

@@ -2,7 +2,7 @@
 
 Decapitalizes the first letter of a string.
 
-Decapitalizes the fist letter of the sring and then adds it with rest of the string. Omit the `upper_rest` parameter to keep the rest of the string intact, or set it to `true` to convert to uppercase.
+Decapitalizes the first letter of the string and then adds it with rest of the string. Omit the `upper_rest` parameter to keep the rest of the string intact, or set it to `true` to convert to uppercase.
 
 ```python
 def decapitalize(string, upper_rest=False):