Update logging level options in documentation to reflect valid values (snowflakedb#1738)

Author: sfc-gh-jmichalak

README.md

@@ -129,14 +129,14 @@ func init() {
 	_ = gosnowflake.GetLogger().SetLogLevel("debug")
 }
 ```
-The following is a list of options you can pass in to set the level from least to most verbose: 
+The following is a list of options you can pass in to set the level from least to most verbose:
 - `"OFF"`
+- `"fatal"`
 - `"error"`
 - `"warn"`
-- `"print"`
-- `"trace"`
-- `"debug"`
 - `"info"`
+- `"debug"`
+- `"trace"`
 
 
 ## Capturing Code Coverage

doc.go

@@ -162,7 +162,7 @@ The following connection parameters are supported:
     In this case (with this default validation deliberately turned off) the driver cannot guarantee that the actual behaviour inside the session will match with the one you'd expect, i.e. not actually using the database you expect, and so on.
 
   - tracing: Specifies the logging level to be used. Set to error by default.
-    Valid values are trace, debug, info, print, warning, error, fatal, panic.
+    Valid values are off, fatal, error, warn, info, debug, trace.
 
   - logQueryText: when set to true, the full query text will be logged. Be aware that it may include sensitive information. Default value is false.