update s3ip sysfs project part

doc/s3ip_sysfs/s3ip_sysfs_hld.md

@@ -299,7 +299,7 @@ However, there are many differences between the two frameworks, which are listed
 |Ecosystem | Devices compliant with S3IP SYSFS specification have been widely used in data centers.<br> The [S3IP](http://www.s3ip.org/) project involved both vendors and users[S3IP] (including Tencent, Alibaba, Baidu, Kuaishou, Meituan, Jingdong and more than a dozen ODM vendors). Vendors and users complete a closed-loop of requirements. standards and debugging tools that have the ability to iterate continuously. | PDDF is a new framework and it is developed in the SONiC context. Some ODM platforms are already using PDDF. PDDF is an underlying framework which ODMs can use for faster development but it does not exposes any fixed SysFS nodes to the user.
 |Development Mode | Regular development model,<br>Programming is required to implement the requirements. <br>ODM venders need to provide professional driver support for customers，Customers validating device with sysfs| ODM vendors can use common PDDF kernel drivers and user space common platform APIs. Only some platform specific device data needs to be provided by the ODMs in the form of JSON files. Validation is via usual SONiC CLIs.
 |Flexible | 1.Bus independent, The hardware support:<br>Fan<br>PSU<br>System EEPROM<br>Transceivers<br>CPLD<br>FPGA<br>System LED<br>Temperature sensors<br>Current sensors<br>Voltage sensors<br>Slot<br>Watchdog<br><br>2.Support scenarios with many customization requirements, such as FPGA-Polling, BMC management hardware and firmware upgrades <br><br>3.Normalized SYSFS is easy for hardware fault identification and prediction <br><br>4.Easy to debug for ODM users, and they need not care about the bus topology |PDDF can be used on the platforms which use I2C bus to communicate with the peripheral devices. Platforms which use BMC can also be brought up using PDDF. In future PDDF would be supported on platform using PCIE FPGA devices.
-|code position |  https://github.com/sonic-net/sonic-buildimage/tree/master/platform/s3ip| https://github.com/sonic-net/sonic-buildimage/tree/master/platform/pddf
+|code position |  https://github.com/sonic-net/sonic-buildimage/tree/master/platform/s3ip-sysfs| https://github.com/sonic-net/sonic-buildimage/tree/master/platform/pddf
 
 PDDF is not incompatible with S3IP SYSFS, we will combine the two parts into two Phases: