fix markdown style

CppCoreGuidelines.md

@@ -4142,7 +4142,7 @@ Consider:
 
 	
 <a name="Rc-move-assignment"></a>
-### C.63: Make move assignment non-`virtual`, take the parameter by `&&`, and return by non-`const `&`
+### C.63: Make move assignment non-`virtual`, take the parameter by `&&`, and return by non-`const &`
 
 **Reason**: It is simple and efficient.
 
@@ -10848,8 +10848,6 @@ Profiles summary:
 * [Pro.bounds: Bounds safety](#SS-bounds)
 * [Pro.lifetime: Lifetime safety](#SS-lifetime)
 
-
-
 <a name="SS-type"></a>
 ## Type safety profile
 
@@ -10859,11 +10857,11 @@ For the purposes of this section, type-safety is defined to be the property that
 
 The following are under consideration but not yet in the rules below, and may be better in other profiles:
 
-   - narrowing arithmetic promotions/conversions (likely part of a separate safe-arithmetic profile)
+* narrowing arithmetic promotions/conversions (likely part of a separate safe-arithmetic profile)
-   - arithmetic cast from negative floating point to unsigned integral type (ditto)
+* arithmetic cast from negative floating point to unsigned integral type (ditto)
-   - selected undefined behavior: ??? this is a big bucket, start with Gaby's UB list
+* selected undefined behavior: ??? this is a big bucket, start with Gaby's UB list
-   - selected unspecified behavior: ??? would this really be about safety, or more a portability concern?
+* selected unspecified behavior: ??? would this really be about safety, or more a portability concern?
-   - constness violations? if we rely on it for safety
+* constness violations? if we rely on it for safety
 
 An implementation of this profile shall recognize the following patterns in source code as non-conforming and issue a diagnostic.
 
@@ -12000,7 +11998,7 @@ public:
 };
 ```
 
-* 1. `nefarious` objects are hard to use safely even as local variables:
+1. `nefarious` objects are hard to use safely even as local variables:
 
 ```
 void test(string& s) {
@@ -12010,7 +12008,7 @@ void test(string& s) {
 ```
 Here, copying `s` could throw, and if that throws and if `n`'s destructor then also throws, the program will exit via `std::terminate` because two exceptions can't be propagated simultaneously.
 
-* 2. Classes with `nefarious` members or bases are also hard to use safely, because their destructors must invoke `nefarious`' destructor, and are similarly poisoned by its poor behavior:
+2. Classes with `nefarious` members or bases are also hard to use safely, because their destructors must invoke `nefarious`' destructor, and are similarly poisoned by its poor behavior:
 
 ```
 class innocent_bystander {
@@ -12026,13 +12024,13 @@ void test(string& s) {
 
 Here, if constructing `copy2` throws, we have the same problem because `i`'s destructor now also can throw, and if so we'll invoke `std::terminate`.
 
-* 3. You can't reliably create global or static `nefarious` objects either:
+3. You can't reliably create global or static `nefarious` objects either:
 
 ```
 static nefarious n;       // oops, any destructor exception can't be caught
 ```
 
-* 4. You can't reliably create arrays of `nefarious`:
+4. You can't reliably create arrays of `nefarious`:
 
 ```
 void test() {
@@ -12041,7 +12039,7 @@ void test() {
 
 The behavior of arrays is undefined in the presence of destructors that throw because there is no reasonable rollback behavior that could ever be devised. Just think: What code can the compiler generate for constructing an `arr` where, if the fourth object's constructor throws, the code has to give up and in its cleanup mode tries to call the destructors of the already-constructed objects... and one or more of those destructors throws? There is no satisfactory answer.
 
-* 5. You can't use `Nefarious` objects in standard containers:
+5. You can't use `Nefarious` objects in standard containers:
 
 ```
 std::vector<nefarious> vec(10);   // this is line can std::terminate()