Reviewed some comments

src/rlgl.c

@@ -2077,7 +2077,7 @@ Shader LoadShader(char *vsFileName, char *fsFileName)
     return shader;
 }
 
-// Load a custom shader and return program id
+// Load custom shader strings and return program id
 unsigned int LoadShaderProgram(char *vShaderStr, char *fShaderStr)
 {
     unsigned int program = 0;

src/rlgl.h

@@ -270,7 +270,7 @@ void PrintModelviewMatrix(void);        // DEBUG: Print modelview matrix
 // NOTE: This functions are useless when using OpenGL 1.1
 //------------------------------------------------------------------------------------
 Shader LoadShader(char *vsFileName, char *fsFileName);              // Load a custom shader and bind default locations
-unsigned int LoadShaderProgram(char *vShaderStr, char *fShaderStr); // Load a custom shader and return program id
+unsigned int LoadShaderProgram(char *vShaderStr, char *fShaderStr); // Load custom shader strings and return program id
 void UnloadShader(Shader shader);                                   // Unload a custom shader from memory
 void SetPostproShader(Shader shader);                               // Set fullscreen postproduction shader
 void SetCustomShader(Shader shader);                                // Set custom shader to be used in batch draw