Describe your change:

Changes

1. A file name extension (.java) was missing for one of the files in DynamicProgramming folder. So I have added it.

- DynamicProgramming/CountNumBinaryStrings

+ DynamicProgramming/CountNumBinaryStrings.java

2. Updated description in the comments above

-* here is a important algo in this we have to count
-* maximum no. of different binary strings which doesnot have
-* consectuive 1s

+* Here is an important algorithm in which we have to count the
+* maximum number of distinct binary strings which does not have
+* consectuive 1s.

What does it do?

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

References

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Java files are placed inside an existing directory.
• All filenames are in all uppercase characters with no spaces or dashes.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.