update ta doc (#670)

gamestonk_terminal/common/technical_analysis/momentum.py

@@ -714,11 +714,11 @@ def cg(other_args: List[str], s_ticker: str, s_interval: str, df_stock: pd.DataF
         formatter_class=argparse.ArgumentDefaultsHelpFormatter,
         prog="cg",
         description="""
-            The Center of Gravity indicator, also known as the COD indicator in short,
-            is a useful feature that enables traders to look into the concurrent price
-            fluctuations and try to predict the upcoming ones. According to the main
-            function of the Center of Gravity indicator explained by John Ehlers, traders
-            who use it will be able to closely speculate the upcoming price change of the asset.
+            The Center of Gravity indicator, in short, is used to anticipate future price movements
+            and to trade on price reversals as soon as they happen. However, just like other oscillators,
+            the COG indicator returns the best results in range-bound markets and should be avoided when
+            the price is trending. Traders who use it will be able to closely speculate the upcoming
+            price change of the asset.
         """,
     )
 

gamestonk_terminal/stocks/fundamental_analysis/fa_controller.py

@@ -245,7 +245,7 @@ class FundamentalAnalysisController:
         av_view.fraud(other_args, self.ticker)
 
     def call_dcf(self, other_args: List[str]):
-        """Process fraud command"""
+        """Process dcf command"""
         dcf_view.dcf(other_args, self.ticker)
 
     def call_fmp(self, _):

gamestonk_terminal/stocks/technical_analysis/README.md

@@ -16,6 +16,8 @@ This menu aims to perform a technical analysis on a pre-loaded ticker chart, and
     - exponential moving average
   * [sma](#sma)
     - simple moving average
+  * [zlma](#zlma)
+    - zero lag moving average
   * [vwap](#vwap)
     - volume weighted average price
 
@@ -28,6 +30,10 @@ This menu aims to perform a technical analysis on a pre-loaded ticker chart, and
     - relative strength index
   * [stoch](#stoch)
     - stochastic oscillator
+  * [fisher](#fisher)
+    - fisher transform
+  * [cg](#cg)
+    - centre of gravity
 
 [TREND](#TREND)
   * [adx](#adx)

gamestonk_terminal/stocks/technical_analysis/ta_controller.py

@@ -51,13 +51,13 @@ class TechnicalAnalysisController:
         "rsi",
         "stoch",
         "fisher",
+        "cg",
         "adx",
         "aroon",
         "bbands",
         "ad",
         "obv",
         "fib",
-        "cg",
     ]
 
     def __init__(