Update README.md [skip ci]

README.md

@@ -11,12 +11,12 @@ DSP.jl provides a number of common [digital signal processing](https://en.wikipe
 
 - [Periodogram estimation](https://docs.juliadsp.org/stable/periodograms)
 - [Filter design and filtering](https://docs.juliadsp.org/stable/filters)
-- [Estimation](http://docs.juliadsp.org/stable/estimation/)
+- [Estimation](https://docs.juliadsp.org/stable/estimation/)
 - [Convolution](https://docs.juliadsp.org/stable/convolutions)
-- [Linear Predictive Coding](https://docs.juliadsp.org//stable/lpc)
+- [Linear Predictive Coding](https://docs.juliadsp.org/stable/lpc)
 - [Window functions](https://docs.juliadsp.org/stable/windows)
 - [Utility functions](https://docs.juliadsp.org/stable/util)
 
 More details can be found in the [Online Documentation](https://docs.juliadsp.org/stable).
 
-The documentation for pre-releases (master) can be found [here](https://docs.juliadsp.org/dev/).
+The documentation for pre-releases (master) can be found [here](https:docs.juliadsp.org/dev/).