update README

README.md

@@ -33,7 +33,7 @@ PKG(ExampleAlg
 )
 ```
 
-An `**algorithm**` is defined as a `c++ class` like
+An **`algorithm`** is defined as a `c++ class` like
 
 ```c++
 // Similar to JUNO Offline, this line will register the algorithm
@@ -72,7 +72,7 @@ More detail can be found in `./Analysis/CommissioningAlg/`.
 
 Similar to `ExampleAlg`, the folders, CMakeLists.txt and \_\_init\_\_.py should be created
 
-A `**tool**` is defined as a `c++ class` too.
+A **`tool`** is defined as a `c++ class` too.
 
 ```c++
 DECLARE_TOOL(ExampleTool);