Renamed mjmModel to mjSpec.

PiperOrigin-RevId: 613516063
Change-Id: I09e360d3eba2accba2e260ec4754b0879b12892f

src/xml/xml.cc

@@ -99,7 +99,7 @@ class LocaleOverride {
 }  // namespace
 
 // Main writer function - calls mjXWrite
-std::string mjWriteXML(mjmModel* model, char* error, int error_sz) {
+std::string mjWriteXML(mjSpec* model, char* error, int error_sz) {
   LocaleOverride locale_override;
 
   // check for empty model
@@ -272,7 +272,7 @@ static void mjIncludeXML(mjXReader& reader, XMLElement* elem,
 
 
 // Main parser function
-mjmModel* mjParseXML(const char* filename, const mjVFS* vfs,
+mjSpec* mjParseXML(const char* filename, const mjVFS* vfs,
                      char* error, int error_sz) {
   LocaleOverride locale_override;
 
@@ -285,7 +285,7 @@ mjmModel* mjParseXML(const char* filename, const mjVFS* vfs,
   }
 
   // clear
-  mjmModel* model = nullptr;
+  mjSpec* model = nullptr;
   if (error) {
     error[0] = '\0';
   }