Fix database error name. Improve dice number conversion error message.

src/error.rs

@@ -68,7 +68,7 @@ pub enum BotError {
     VariablesNotSupported,
 
     #[error("database error")]
-    DatabaseErrror(#[from] sled::Error),
+    DatabaseError(#[from] sled::Error),
 
     #[error("too many commands or message was too large")]
     MessageTooLarge,

src/parser.rs

@@ -19,7 +19,7 @@ pub enum DiceParsingError {
     #[error("{0}")]
     InternalParseError(#[from] combine::error::StringStreamError),
 
-    #[error("number conversion error")]
+    #[error("number parsing error (too large?)")]
     ConversionError,
 }