Added blog on Sieve of Eratosthenes

[aastha0326]

I have added a blog on sieve of eratosthenes, which also has a pseudo java code. Please let me know if you expect any changes and if not merge this PR and add hacktoberfest label on it.

[LoopThrough-i-j]

Also add yourself, as an author @aastha01chauhan.

[aastha0326]

@LoopThrough-i-j added my name is authors' file. Please add hackberfest-accepted label too!

[Ruchip16]

@LoopThrough-i-j added my name is authors' file. Please add hackberfest-accepted label too!

plz do the requested changes first & commit them @aastha01chauhan

[aastha0326]

@Ruchip16 I added the codeblock, checked for grammatical mistakes, and added my name in author, have committed the changes too. Is there anything you expect me change?

[aastha0326]

Checked for mistakes again and corrected too

[aastha0326]

@Ruchip16 Please let me know what changes you expect?

[Ruchip16]

@Ruchip16 Please let me know what changes you expect?

i have already suggested the changes plz commit them

[LoopThrough-i-j]

@aastha01chauhan, please add yourself to the authors as well, as mentioned in the docs.

After completing changes run:

git add .
git commit -m "Fix: blog on Sieve of Eratosthenes"
git push

[aastha0326]

@LoopThrough-i-j im working on it