text: Title: Minor Error in Inertia and Relative Volatility Index Documentation
  Body: While `Inertia: inertia` is calculated correctly, the documentation, https://github.com/twopirllc/pandas-ta/blob/47d8da67e1bd46476f5f7547c48ccb67598e63ed/pandas_ta/momentum/inertia.py#L17-L25, states`Relative Vigor Index` instead of the `Relative Volatility Index`. It also links to https://www.investopedia.com/terms/r/relative_vigor_index.asp instead of an article on the `Relative Volatility Index`. Also, the `Relative Volatility Index` documentation, https://github.com/twopirllc/pandas-ta/blob/development/pandas_ta/volatility/rvi.py#L24, links to https://www.tradingview.com/wiki/Keltner_Channels_(KC) instead of a website on the `Relative Volatility Index`, such as https://www.tradingview.com/support/solutions/43000594684-relative-volatility-index/.
  
  