fixed: to correct grammatical mistakes (TheAlgorithms#1307)

Corrected grammatical mistakes

Author: htinz

.github/pull_request_template.md

@@ -15,5 +15,5 @@
 - [ ] All new JavaScript files are placed inside an existing directory.
 - [ ] All filenames should use the UpperCamelCase (PascalCase) style. There should be no spaces in filenames.
       **Example:**`UserProfile.js` is allowed but `userprofile.js`,`Userprofile.js`,`user-Profile.js`,`userProfile.js` are not
-- [ ] All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
+- [ ] All new algorithms have a URL in their comments that points to Wikipedia or another similar explanation.
 - [ ] If this pull request resolves one or more open issues then the commit message contains `Fixes: #{$ISSUE_NO}`.