docs: Unify bridge category and add Solidity highlighting (#99)

Author: pinalikefruit

test/Access_Control/DAOMaker/README.md

@@ -45,7 +45,7 @@ The exploited contract is simply a universal-proxy-like, which delegates call to
 
 The `init` method sets as `owner` anyone who calls it. You can check [the decompilation](https://etherscan.io/bytecode-decompiler?a=0xf17ca0e0f24a5fa27944275fa0cedec24fbf8ee2) and look for the `unknown84304ad7` method, as the decompiler calls it. Look at the bottom, you will see `owner = caller`.
 
-```
+```solidity
 def unknown84304ad7() payable:
   require calldata.size - 4 >= 128
   require cd <= 4294967296

test/Bridges/ArbitrumInbox/README.md

@@ -6,7 +6,7 @@ network: [ethereum]
 date: 2022-09-19
 loss_usd: 400000
 returned_usd: 0
-tags: [access control, bridge, reinitialization]
+tags: [access control, bridges, reinitialization]
 subcategory: []
 vulnerable_contracts:
   - "0x3e2198a77fc6b266082b92859092170763548730"

test/Business_Logic/TornadoCash_Governance/README.md

@@ -37,13 +37,13 @@ sources: []
 
 Make sure to update your foundry version with:
 
-```
+```bash
 $ foundryup
 ```
 
 Ensure that the installed version is the following or newer:
 
-```
+```bash
 foundryup: installed - forge 0.2.0 (33f3fee 2023-05-26T00:09:41.611811000Z)
 ```
 
@@ -156,7 +156,7 @@ $ cast sig 'lockedBalance(address)'
 
 Using a [Solidity decompiler](https://ethervm.io/decompile), we find the dispatch entry for that method in the bytecode:
 
-```
+```solidity
     } else if (var0 == 0x9ae697bf) {
         // Dispatch table entry for lockedBalance(address)
         var1 = msg.value;
@@ -174,7 +174,7 @@ Using a [Solidity decompiler](https://ethervm.io/decompile), we find the dispatc
 
 After some digging, we realize `func_063B` must be our candidate, and `var2` must be the `address` used as input.
 
-```
+```solidity
    function func_063B(var arg0) returns (var arg0) {
         memory[0x20:0x40] = 0x3b;
         memory[0x00:0x20] = arg0;