Fix invalid link and typos (#5232)

Signed-off-by: Hadrien Croubois <hadrien.croubois@gmail.com>

docs/modules/ROOT/pages/utilities.adoc

@@ -32,7 +32,7 @@ WARNING: Getting signature verification right is not trivial: make sure you full
 
 ==== P256 Signatures (secp256r1)
 
-P256, also known as secp256r1, is one of the most used signature schemes. P256 signatures are standardized by the National Institute of Standards and Technology (NIST) and it's widely available in consumer hardware and software.
+P256, also known as secp256r1, is one of the most used signature schemes. P256 signatures are standardized by the National Institute of Standards and Technology (NIST) and they are widely available in consumer hardware and software.
 
 These signatures are different from regular Ethereum Signatures (secp256k1) in that they use a different elliptic curve to perform operations but have similar security guarantees.
 
@@ -51,7 +51,7 @@ function _verify(
 }
 ----
 
-By default, the `verify` function will try calling the (https://github.com/ethereum/RIPs/blob/master/RIPS/rip-7212.md)[RIP-7212] precompile at address `0x100` and will fallback to an implementation in Solidity if not available. We encourage you to use `verifyNative` if you know the precompile is available on the chain you're working on and on any other chain on which you intend to use the same bytecode in the future. In case of any doubts regarding the implementation roadmap of the native precompile `P256` of potential future target chains, please consider using `verifySolidity`.
+By default, the `verify` function will try calling the https://github.com/ethereum/RIPs/blob/master/RIPS/rip-7212.md[RIP-7212] precompile at address `0x100` and will fallback to an implementation in Solidity if not available. We encourage you to use `verifyNative` if you know the precompile is available on the chain you're working on and on any other chain on which you intend to use the same bytecode in the future. In case of any doubts regarding the implementation roadmap of the native precompile `P256` of potential future target chains, please consider using `verifySolidity`.
 
 [source,solidity]
 ----
@@ -73,7 +73,7 @@ IMPORTANT: The P256 library only allows for `s` values in the lower order of the
 
 ==== RSA
 
-RSA a public-key cryptosystem that was popularized by corporate and governmental public key infrastructures (https://en.wikipedia.org/wiki/Public_key_infrastructure[PKIs]) and https://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions[DNSSEC]. 
+RSA is a public-key cryptosystem that was popularized by corporate and governmental public key infrastructures (https://en.wikipedia.org/wiki/Public_key_infrastructure[PKIs]) and https://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions[DNSSEC]. 
 
 This cryptosystem consists of using a private key that's the product of 2 large prime numbers. The message is signed by applying a modular exponentiation to its hash (commonly SHA256), where both the exponent and modulus compose the public key of the signer.
 
@@ -99,7 +99,7 @@ IMPORTANT: Always use keys of at least 2048 bits. Additionally, be aware that PK
 
 === Verifying Merkle Proofs
 
-Developers can build a Merkle Tree off-chain, which allows for verifying that an element (leaf) is part of a set by using a Merkle Proof. This technique is widely used for creating whitelists (e.g. for airdrops) and other advanced use cases.
+Developers can build a Merkle Tree off-chain, which allows for verifying that an element (leaf) is part of a set by using a Merkle Proof. This technique is widely used for creating whitelists (e.g., for airdrops) and other advanced use cases.
 
 TIP: OpenZeppelin Contracts provides a https://github.com/OpenZeppelin/merkle-tree[JavaScript library] for building trees off-chain and generating proofs.
 
@@ -149,7 +149,7 @@ contract MyContract {
 [[math]]
 == Math
 
-Although Solidity already provides math operators (i.e. `+`, `-`, etc.), Contracts includes xref:api:utils.adoc#Math[`Math`]; a set of utilities for dealing with mathematical operators, with support for extra operations (eg. xref:api:utils.adoc#Math-average-uint256-uint256-[`average`]) and xref:api:utils.adoc#SignedMath[`SignedMath`]; a library specialized in signed math operations.
+Although Solidity already provides math operators (i.e. `+`, `-`, etc.), Contracts includes xref:api:utils.adoc#Math[`Math`]; a set of utilities for dealing with mathematical operators, with support for extra operations (e.g., xref:api:utils.adoc#Math-average-uint256-uint256-[`average`]) and xref:api:utils.adoc#SignedMath[`SignedMath`]; a library specialized in signed math operations.
 
 Include these contracts with `using Math for uint256` or `using SignedMath for int256` and then use their functions in your code:
 
@@ -272,7 +272,7 @@ function replace(Uint256Heap storage self, uint256 newValue) internal returns (u
 
 === Packing
 
-The storage in the EVM is shaped in chunks of 32 bytes, each of this chunks is known as _slot_, and can hold multiple values together as long as these values don't exceed its size. These properties of the storage allow for a technique known as _packing_, that consists of placing values together on a single storage slot to reduce the costs associated to reading and writing to multiple slots instead of just one.
+The storage in the EVM is shaped in chunks of 32 bytes, each of this chunks is known as a _slot_, and can hold multiple values together as long as these values don't exceed its size. These properties of the storage allow for a technique known as _packing_, that consists of placing values together on a single storage slot to reduce the costs associated to reading and writing to multiple slots instead of just one.
 
 Commonly, developers pack values using structs that place values together so they fit better in storage. However, this approach requires to load such struct from either calldata or memory. Although sometimes necessary, it may be useful to pack values in a single slot and treat it as a packed value without involving calldata or memory.