Update README.md to try to fix all the broken links returning 404s

Author: ltfschoen

content/README.md

@@ -2,12 +2,12 @@
 
 | Module | Name                                                                                                         |
 | ------ | ------------------------------------------------------------------------------------------------------------ |
-| 1      | [Cryptography for Blockchain](./1-Cryptography/index.md)                                                     |
-| 2      | [Interdisciplinary Concepts for Decentralized Devs (Econ, Polisci)](./2-Economics/index.md)                  |
-| 3      | [Blockchain](./3-Blockchain/index.md)                                                                        |
-| 4      | [Core and Basics](./4-Core_and_Basics/index.md)                                                              |
-| 5      | [PVM, Polkadot Architecture and Smart Contracts](./5-PVM-Polkadot-Architecture-and-Smart-Contracts/index.md) |
-| 6      | [Protocol track (Polkadot Cloud)](./6-Protocol_On-Chain/index.md)                                            |
-| 7      | [dApps track (Polkadot Hub)](./7-dApps_Off-Chain/index.md)                                                   |
-| 8      | [Governance](./8-Governance/index.md)                                                                        |
-| 9      | [Polkadot, JAM and the future](./9-Polkadot/index.md)                                                        |
+| 1      | [Cryptography for Blockchain](./content/1-Cryptography/index.md)                                                     |
+| 2      | [Interdisciplinary Concepts for Decentralized Devs (Econ, Polisci)](./content/2-Economics/index.md)                  |
+| 3      | [Blockchain](./content/3-Blockchain/index.md)                                                                        |
+| 4      | [Core and Basics](./content/4-Core_and_Basics/index.md)                                                              |
+| 5      | [PVM, Polkadot Architecture and Smart Contracts](./content/5-PVM-Polkadot-Architecture-and-Smart-Contracts/index.md) |
+| 6      | [Protocol track (Polkadot Cloud)](./content/6-Protocol_On-Chain/index.md)                                            |
+| 7      | [dApps track (Polkadot Hub)](./content/7-dApps_Off-Chain/index.md)                                                   |
+| 8      | [Governance](./content/8-Governance/index.md)                                                                        |
+| 9      | [Polkadot, JAM and the future](./content/9-Polkadot/index.md)                                                        |