Other raga reference sites: https://www.tanarang.com/english/raagIndex_eng.htm https://raagtime.com/ragas/
The above sites use the labelling convention that the flatter version of a note uses the lower case. Hence 'm' or 'ma' for Shuddhe Ma (the natural or perfect 4th), 'M' or 'Ma' for Tivra Ma (the augmented 4th). https://learnraga.com/ragas
This site labels the notes with capital letters, with a line underneath indicating a komal (flat) note, or a line above a tivra (sharp) note.
In contrast to RiyazStudio, the above sites use the labelling convention that the Shuddhe (or natural) version of a note uses the upper case. Hence 'M' or 'Ma' for Shuddhe Ma (the natural or perfect 4th), 'm' or 'ma' for Tivra Ma (the augmented 4th).