docs: remove consecutive duplicate words (#335)

* Update announcing-anon-aadhaar.md

Author: zeroprooff

articles/announcing-anon-aadhaar.md

@@ -40,7 +40,7 @@ _Table modified from [https://vitalik.ca/general/2023/07/24/biometric.html](http
 - SDK to directly integrate with your dapp
 - PCD package to leverage this framework
 - React package to quickly integrate your front-end
-- Example app to try it and and fork
+- Example app to try it and fork
 - Proving time ~30s (avg on browser)
 
 ### What it contains

articles/announcing-maci-v111.md

@@ -62,7 +62,7 @@ In this [post](https://ethresear.ch/t/pairwise-coordination-subsidies-a-new-quad
 
 Please refer to this [post](https://hackmd.io/@chaosma/H1_9xmT2K) for a more detailed explanation of the implementation.
 
-Finally, please note that currently it is not possible to generate the `zkeys` for the subsidy circuit with with the `vote options` parameter larger than 5252. This issue is documented [here](https://github.com/privacy-scaling-explorations/maci/issues/584) and the team will focus on finding a solution to be able to support larger vote options.
+Finally, please note that currently it is not possible to generate the `zkeys` for the subsidy circuit with the `vote options` parameter larger than 5252. This issue is documented [here](https://github.com/privacy-scaling-explorations/maci/issues/584) and the team will focus on finding a solution to be able to support larger vote options.
 
 ### Coordinator Service
 

articles/release-announcement-maci-10-privacy-scaling-explorations.md

@@ -19,7 +19,7 @@ MACI 1.0 was audited by [Hashcloak](https://hashcloak.com/). All vulnerabilities
 
 ## About MACI
 
-MACI is a set of smart contracts and zero-knowledge circuits upon which which developers can build collusion-resistant applications, such as voting systems or quadratic funding platforms. MACI per se is not a user-facing application. Rather, developers may build applications on top of it. In turn, such applications can benefit from the following properties:
+MACI is a set of smart contracts and zero-knowledge circuits upon which developers can build collusion-resistant applications, such as voting systems or quadratic funding platforms. MACI per se is not a user-facing application. Rather, developers may build applications on top of it. In turn, such applications can benefit from the following properties:
 
 Comment
 

articles/retrospective-summa.md

@@ -45,7 +45,7 @@ The following are some of the breakthroughs the team made throughout the life of
 - **Summa Version 1** made improvements over previous PoR systems by including the verifier directly in the contract. This increased the transparency of the verifying contract, ensuring that users were using one standard verifier when verifying their inclusion proofs, and also improved UX and security by reducing the need to run additional local software.
 - **Summa Version 2**
 
-  - Offered a novel alternative to merkle trees via the use of the univariate sumcheck protocol, which provided a significant improvement of commitment performance. This was achieved through the development of a more optimised and readable solidity KZG verifier to handle using using univariate polynomials in a smart contract.
+  - Offered a novel alternative to merkle trees via the use of the univariate sumcheck protocol, which provided a significant improvement of commitment performance. This was achieved through the development of a more optimised and readable solidity KZG verifier to handle using univariate polynomials in a smart contract.
   - Used a technique called [Amortized KZG](https://hackmd.io/@summa/HJ-dtmNdT), developed by another team within PSE, to enable batch proofing. This allowed for the verification of customer groups numbering fewer than approximately 10 million, effectively thwarting a profiling attack for groups of this size.
 
 - **Summa Version 3** showed a significant improvement over v1 and v2 when it came to generating inclusion proof performance. A benchmark comparison can be seen [here](https://hackmd.io/wt4NkeUWSWi2ym6DNcsT-Q#Performance-Comparison-by-Summa-versions).

articles/semaphore-v3-announcement.md

@@ -110,7 +110,7 @@ There are many dapps already using Semaphore in categories spanning voting, soci
 **Gaming / DeFi**
 
 - [Chain Statements](https://ethglobal.com/showcase/chain-statements-kdurw) is a way to generate statements for your crypto funds using ZKPs privately and permissionlessly.
-- [zkIdentity](https://github.com/sigridjineth/zkIdentity) is a private identity claim system with zero-knowledge for DarkForest.eth. It allows a a previous winner claim prizes without revealing the recipient's Ethereum address.
+- [zkIdentity](https://github.com/sigridjineth/zkIdentity) is a private identity claim system with zero-knowledge for DarkForest.eth. It allows a previous winner claim prizes without revealing the recipient's Ethereum address.
 
 **Interoperability**